@font-face { font-family: 'Barlow'; font-weight: 400; font-display: swap; src: url(fonts/barlow-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: 'Barlow'; font-weight: 500; font-display: swap; src: url(fonts/barlow-latin-500-normal.woff2) format('woff2'); }
@font-face { font-family: 'Barlow'; font-weight: 600; font-display: swap; src: url(fonts/barlow-latin-600-normal.woff2) format('woff2'); }
@font-face { font-family: 'Barlow Semi Condensed'; font-weight: 600; font-display: swap; src: url(fonts/barlow-semi-condensed-latin-600-normal.woff2) format('woff2'); }
@font-face { font-family: 'Barlow Semi Condensed'; font-weight: 700; font-display: swap; src: url(fonts/barlow-semi-condensed-latin-700-normal.woff2) format('woff2'); }

:root {
  --bg: #15191e;
  --surface: #1c2228;
  --surface-2: #232a31;
  --line: #313a43;
  --line-strong: #44505b;
  --ink: #e5e9ed;
  --ink-2: #b9c2cb;
  --muted: #8a96a3;
  --amber: #e8a33d;
  --green: #4cbb81;
  --blue: #62a8e3;
  --red: #ea6a61;
  --led-off: #2e363e;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 'Barlow', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--amber); }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: 'Barlow Semi Condensed', 'Barlow', sans-serif; font-weight: 600; margin: 0; line-height: 1.15; }
h1 { font-size: clamp(40px, 6vw, 68px); font-weight: 700; letter-spacing: -0.005em; }
h2 { font-size: clamp(28px, 3.4vw, 38px); }
h3 { font-size: 21px; }
p { margin: 0; }
code, pre, kbd { font-family: ui-monospace, 'Cascadia Mono', Consolas, monospace; font-size: 14px; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* nav */
.top { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(21, 25, 30, 0.92); backdrop-filter: blur(6px); z-index: 10; }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 22px 'Barlow Semi Condensed', sans-serif; letter-spacing: 0.06em; }
.logo i { display: block; height: 4px; border-radius: 1px; background: var(--amber); }
.logo span { display: grid; gap: 3px; width: 22px; }
.logo i:nth-child(2) { background: var(--green); }
.logo i:nth-child(3) { background: var(--muted); width: 60%; }
.top nav { display: flex; gap: 22px; margin-left: auto; }
.top nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; }
.top nav a:hover { color: var(--ink); }

.btn { display: inline-flex; align-items: center; gap: 8px; height: 46px; padding: 0 20px; border-radius: 7px; border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--ink); font: 600 16px 'Barlow', sans-serif; text-decoration: none; cursor: pointer; }
.btn:hover { background: #2b333b; }
.btn.primary { background: var(--amber); border-color: var(--amber); color: #1a1408; }
.btn.primary:hover { filter: brightness(1.07); }

/* hero */
.hero { padding: 84px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; }
.hero p.lead { font-size: 20px; color: var(--ink-2); margin-top: 20px; max-width: 34ch; }
.hero .cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero .note { margin-top: 18px; color: var(--muted); font-size: 15px; }

.bench { display: grid; gap: 10px; }
.bay { display: grid; grid-template-columns: 6px minmax(0, 1fr) 70px; gap: 16px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 9px; padding: 14px 16px 14px 0; }
.bay .stripe { align-self: stretch; border-radius: 9px 0 0 9px; }
.bay b { display: block; font: 600 21px 'Barlow Semi Condensed', sans-serif; }
.bay small { color: var(--muted); font-size: 14px; }
.bay .pct { font: 600 30px 'Barlow Semi Condensed', sans-serif; text-align: right; }
.leds { display: flex; gap: 4px; margin-top: 10px; }
.leds i { flex: 1; height: 8px; border-radius: 2px; background: var(--led-off); }
.leds i.on { background: var(--green); }
.leds i.run { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.bay .msg { font-size: 13px; color: var(--ink-2); margin-top: 6px; }

/* one orchestrated load sequence: the bench lights up step by step */
@media (prefers-reduced-motion: no-preference) {
  .leds i.on, .leds i.run { animation: light 0.25s both; animation-delay: calc(var(--n) * 90ms + var(--row) * 160ms + 250ms); }
  @keyframes light { from { background: var(--led-off); box-shadow: none; } }
}

/* sections */
section { padding: 72px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head p { color: var(--ink-2); margin-top: 12px; font-size: 18px; }

.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 56px; }
.feature { padding: 22px 0; border-top: 1px solid var(--line); }
.feature p { color: var(--ink-2); margin-top: 8px; }
.feature .tag { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 10px; vertical-align: 2px; background: var(--amber); }

.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: s; }
.flow li { list-style: none; padding: 18px 18px 0 0; border-top: 3px solid var(--led-off); position: relative; }
.flow li::before { counter-increment: s; content: counter(s); font: 700 34px 'Barlow Semi Condensed', sans-serif; color: var(--amber); display: block; margin-bottom: 6px; }
.flow li:last-child { border-top-color: var(--green); }
.flow li p { color: var(--ink-2); font-size: 15px; margin-top: 6px; }
.flow { padding: 0; margin: 0; }

.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.shot figure { margin: 0; }
.shot img { border: 1px solid var(--line-strong); border-radius: 9px; }
.shot figcaption { color: var(--muted); font-size: 15px; margin-top: 10px; }
.shot.wide { grid-column: span 2; }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 24px; flex-wrap: wrap; }
.tabs button { font: 600 16px 'Barlow', sans-serif; background: none; border: 0; color: var(--muted); padding: 10px 16px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button[aria-selected='true'] { color: var(--ink); border-bottom-color: var(--amber); }
.panel { display: none; }
.panel.on { display: grid; gap: 16px; max-width: 78ch; }
.panel ol { margin: 0; padding-left: 22px; display: grid; gap: 10px; }
pre { background: #0f1317; border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; overflow-x: auto; margin: 0; color: var(--ink); }
code { background: var(--surface-2); padding: 1px 6px; border-radius: 4px; }
pre code { background: none; padding: 0; }

.reqs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; }
.reqs dl { margin: 0; }
.reqs dt { color: var(--muted); font-size: 15px; margin-top: 16px; }
.reqs dd { margin: 2px 0 0; }

.faq details { border-top: 1px solid var(--line); padding: 18px 0; max-width: 80ch; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 20px; }
.faq summary::after { content: '+'; color: var(--amber); font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: '–'; }
.faq details p, .faq details ul { color: var(--ink-2); margin-top: 10px; }

.cta-band { text-align: left; }
.cta-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }

footer { border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer a { color: var(--ink-2); }

/* guide page */
.doc { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 56px; padding: 48px 0 80px; }
.doc aside { position: sticky; top: 88px; align-self: start; display: grid; gap: 4px; font-size: 15px; }
.doc aside a { color: var(--ink-2); text-decoration: none; padding: 4px 0; }
.doc aside a:hover { color: var(--ink); }
.doc aside b { color: var(--muted); font-weight: 600; margin-top: 14px; font-size: 13px; }
.doc article { max-width: 76ch; display: grid; gap: 16px; }
.doc article h1 { font-size: 46px; }
.doc article h2 { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); scroll-margin-top: 80px; }
.doc article h3 { margin-top: 12px; scroll-margin-top: 80px; }
.doc article p, .doc article li { color: var(--ink-2); }
.doc article ol, .doc article ul { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.doc article strong { color: var(--ink); }
.doc table { border-collapse: collapse; width: 100%; }
.doc th, .doc td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { color: var(--muted); font-weight: 600; font-size: 15px; }
.callout { border-left: 3px solid var(--amber); background: var(--surface); padding: 14px 18px; border-radius: 0 8px 8px 0; color: var(--ink-2); }

@media (max-width: 900px) {
  .hero .wrap, .features, .shots, .reqs, .doc { grid-template-columns: 1fr; }
  .shot.wide { grid-column: auto; }
  .flow { grid-template-columns: 1fr; }
  .flow li { padding-bottom: 12px; }
  .top nav { display: none; }
  .doc aside { position: static; }
}

.install { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; counter-reset: st; }
.steps li { display: grid; grid-template-columns: 44px 1fr; column-gap: 14px; }
.steps li::before { counter-increment: st; content: counter(st); grid-row: span 2; font: 700 32px/1 'Barlow Semi Condensed', sans-serif; color: var(--amber); }
.steps li p { color: var(--ink-2); margin-top: 4px; }
.download-card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 24px; display: grid; gap: 14px; }
.download-card .btn { justify-content: center; height: 52px; font-size: 17px; }
.download-card details summary { cursor: pointer; color: var(--ink-2); }
.download-card details ul { margin: 10px 0 0; padding-left: 20px; color: var(--ink-2); display: grid; gap: 6px; font-size: 15px; }
.download-card details p { color: var(--ink-2); font-size: 15px; margin-top: 8px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
@media (max-width: 900px) { .install { grid-template-columns: 1fr; } }