/* Open BRX site. Two layouts share this file: the DOC pages (one readable column, light and dark)
   and the LANDING pages (dark by design, marketing anatomy). The type is Mission Control's:
   Oswald for display, Chakra Petch for UI copy, the system stack for long reading. */

/* ---- type: self-hosted, latin subsets, from site/public/fonts ---- */
@font-face { font-family: "Oswald"; font-style: normal; font-weight: 200 700; font-display: swap; src: url(/fonts/oswald-latin.woff2) format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/chakra-petch-500-latin.woff2) format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/chakra-petch-600-latin.woff2) format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/chakra-petch-700-latin.woff2) format("woff2"); }

:root {
  --bg: #ffffff; --panel: #f6f7f9; --ink: #1a1d21; --muted: #5b6470;
  --line: #d9dde3; --line-strong: #6b7684; --accent: #0b6bcb; --code-bg: #f2f4f7;
  --quote-bg: #f4f7fb; --yes-bg: #0b6bcb; --yes-ink: #ffffff; --no-ink: #5b6470;
  --display: "Oswald", "Arial Narrow", Impact, sans-serif;
  --ui: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
/* no data-theme = follow the reader's system setting */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1116; --panel: #161b22; --ink: #e6edf3; --muted: #9aa4b2;
    --line: #2a313b; --line-strong: #7d8899; --accent: #58a6ff; --code-bg: #161b22;
    --quote-bg: #131c27; --yes-bg: #1f6feb; --yes-ink: #ffffff; --no-ink: #9aa4b2;
    color-scheme: dark;
  }
}
/* an explicit choice wins in both directions */
:root[data-theme="dark"] {
  --bg: #0e1116; --panel: #161b22; --ink: #e6edf3; --muted: #9aa4b2;
  --line: #2a313b; --line-strong: #7d8899; --accent: #58a6ff; --code-bg: #161b22;
  --quote-bg: #131c27; --yes-bg: #1f6feb; --yes-ink: #ffffff; --no-ink: #9aa4b2;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #ffffff; --panel: #f6f7f9; --ink: #1a1d21; --muted: #5b6470;
  --line: #d9dde3; --line-strong: #6b7684; --accent: #0b6bcb; --code-bg: #f2f4f7;
  --quote-bg: #f4f7fb; --yes-bg: #0b6bcb; --yes-ink: #ffffff; --no-ink: #5b6470;
  color-scheme: light;
}
/* the landing pages are Mission Control's ground, whatever the reader's theme */
:root.landing {
  --bg: #07090d; --panel: #0c1016; --ink: #e8eef5; --muted: #8aa0b4; --micro: #71879c;
  --line: #1c2733; --line-strong: #25313f; --accent: #39b4ff; --accent-hover: #7fd0ff; --accent-ink: #04121e;
  --code-bg: #05070a; --deep: #05070a; color-scheme: dark;
}

* { box-sizing: border-box; }
:where(a, button, input, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px;
}
body {
  margin: 0; background: var(--bg); color: var(--ink);
  /* 17px, not 16: this is read at arm's length on a phone, outdoors, in a hurry */
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--accent); }
.skip { position: absolute; left: -9999px; }
/* above the sticky header (z-index 20). At 10 it rendered behind it, so the first tab stop on
   every page was invisible and keyboard users had no bypass at all. */
.skip:focus {
  left: 8px; top: 8px; background: var(--bg); color: var(--ink);
  padding: 10px 14px; border: 1px solid var(--line-strong); border-radius: 8px; z-index: 100;
}

/* ---- chrome ---- */
.top {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px; border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky; top: 0; z-index: 20;
}
@supports not (backdrop-filter: blur(1px)) { .top { background: var(--panel); } }
/* the wordmark names the place, with the HUD's blue slash; clicking it opens the core places */
.brand { position: relative; flex: none; display: flex; align-items: center; }
/* on a doc page the section links sit right after the wordmark: a hairline keeps them apart */
body:not(.landing):not(.manual) .brand { padding-right: 18px; margin-right: 6px; border-right: 1px solid var(--line-strong); height: 28px; }
.wm {
  display: inline-flex; align-items: center; gap: 10px; height: 40px; padding: 0 8px 0 0; margin: 0;
  background: none; border: 0; color: var(--ink); cursor: pointer; border-radius: 6px;
  font: italic 700 21px/1 var(--display); letter-spacing: .12em; text-transform: uppercase;
}
.wm .logo { color: var(--accent); flex: none; }
/* every part sits on one optical centre line: icon, name, slash and the small place label */
.wm-name { display: inline-flex; align-items: center; line-height: 1; padding-top: 2px; }
.wm b { color: var(--accent); font-weight: 700; margin-left: 2px; }
.wm-sub { font: 600 11px/1 var(--display); letter-spacing: .32em; text-transform: uppercase; color: var(--muted); font-style: normal; padding-top: 3px; }
.wm:hover .logo, .wm[aria-expanded="true"] .logo { color: var(--ink); }
.wm:hover .wm-sub { color: var(--ink); }
.places {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 40; margin: 0; padding: 6px; list-style: none; min-width: 260px;
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: 10px; box-shadow: 0 16px 40px rgb(0 0 0 / 35%);
}
.places li { margin: 0; padding: 0; }
.places a { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; min-height: 44px; border-radius: 6px; text-decoration: none; color: var(--ink); }
.places a span { font: 600 14px/1.2 var(--display); letter-spacing: .1em; text-transform: uppercase; }
.places a small { font: 500 12px/1.3 var(--ui); color: var(--muted); }
.places a:hover, .places a:focus-visible { background: var(--panel); outline: none; box-shadow: inset 0 0 0 2px var(--accent); }
.places a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--accent); }
/* visually hidden but read aloud */
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.topnav { display: flex; gap: 14px; flex-wrap: wrap; }
.topnav a { color: var(--muted); text-decoration: none; padding: 6px 2px; min-height: 36px; display: inline-flex; align-items: center; font: 600 13px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; }
.topnav a:hover, .topnav a[aria-current="page"] { color: var(--ink); }
.topnav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }
/* the nav is always visible on a wide screen; the burger is a phone control only */
.burger { display: none; }
.theme {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; padding: 0; flex: none;
  background: var(--bg); border: 1px solid var(--line-strong); color: var(--muted);
  border-radius: 8px; cursor: pointer; transition: color .12s, border-color .12s, background .12s;
}
.theme:hover { color: var(--ink); border-color: var(--ink); }
.theme:active { background: var(--panel); }
/* show the icon that names the ACTION: a moon in light mode means "switch to dark" */
.theme .i-sun { display: none; }
.theme .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme .i-sun { display: block; }
  :root:not([data-theme="light"]) .theme .i-moon { display: none; }
}
:root[data-theme="dark"] .theme .i-sun { display: block; }
:root[data-theme="dark"] .theme .i-moon { display: none; }
:root[data-theme="light"] .theme .i-sun { display: none; }
:root[data-theme="light"] .theme .i-moon { display: block; }
/* ---- search ----------------------------------------------------------------------------------
   A visible field, not a hidden shortcut: on a reference site the lookup IS the primary action,
   and a palette you can only reach by knowing a chord is invisible to the person who needs it most. */
.find { position: relative; flex: 0 1 300px; margin-left: auto; }
.find input {
  width: 100%; padding: 8px 12px; min-height: 38px; font: inherit; font-size: 15px;
  border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--bg); color: var(--ink);
}
.find input::placeholder { color: var(--muted); }
.results {
  position: absolute; top: calc(100% + 6px); right: 0; width: min(30rem, 92vw);
  max-height: min(70vh, 520px); overflow-y: auto; z-index: 30;
  background: var(--bg); border: 1px solid var(--line-strong);
  border-radius: 10px; box-shadow: 0 12px 28px rgb(0 0 0 / 18%);
}
.results a {
  display: block; padding: 10px 14px; text-decoration: none; color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.results a:last-child { border-bottom: 0; }
.results a.on, .results a:hover { background: var(--panel); }
.results a.on { box-shadow: inset 3px 0 0 var(--accent); }
.r-h { display: block; font-weight: 650; }
.r-p { display: block; font-size: 13px; color: var(--muted); margin-top: 1px; }
.r-t { display: block; font-size: 13.5px; color: var(--muted); margin-top: 4px; line-height: 1.45; }
/* inherit made the mark 3.9:1 against its own highlight, below the 6:1 of the text around it */
.results mark { background: color-mix(in srgb, var(--accent) 26%, transparent); color: var(--ink); border-radius: 2px; }
.r-none { margin: 0; padding: 14px; color: var(--muted); font-size: 14px; }

main { max-width: 62rem; margin: 0 auto; padding: 24px 20px 64px; }
/* tables, code and the ToC keep the full column; running prose gets a readable measure */
article > p, article > ul, article > ol, article > blockquote { max-width: 44rem; }
footer {
  border-top: 1px solid var(--line); padding: 20px; color: var(--muted);
  font-size: 14px; max-width: 62rem; margin: 0 auto;
}

/* ---- text ---- */
h1 { font: 700 2.4rem/1.05 var(--display); letter-spacing: .005em; text-transform: uppercase; margin: 8px 0 4px; }
/* a section break should read as one: a rule, real air, and a heavier face */
h2 {
  font: 700 1.55rem/1.2 var(--display); letter-spacing: .01em; text-transform: uppercase;
  margin: 56px 0 12px; padding-top: 20px; border-top: 2px solid var(--line);
}
/* a subsection is a step down in weight, not a rule: it groups, it does not divide */
h3 {
  font-size: 1.28rem; line-height: 1.3; font-weight: 700; letter-spacing: -0.005em;
  margin: 38px 0 8px; color: var(--ink);
}
h4 { font-size: 1rem; font-weight: 650; margin: 22px 0 4px; color: var(--muted); }
/* clears the sticky header. It is ~60px on a desktop but ~184px at 390px wide, where the nav
   wraps under the search field, so a flat 72px dropped every in-page jump behind it. */
h2, h3, h4, #main, .feat { scroll-margin-top: calc(var(--header-h, 76px) + 12px); }
main.landing h2 { scroll-margin-top: calc(var(--header-h, 64px) + 40px); }
/* CSS-only fallback for the widths where the header wraps, so an anchor clears it with JS off */
@media (max-width: 768px)  { h2, h3, h4, #main { scroll-margin-top: calc(var(--header-h, 176px) + 12px); } }
@media (max-width: 480px)  { h2, h3, h4, #main { scroll-margin-top: calc(var(--header-h, 196px) + 12px); } }
h2 + p, h3 + p { margin-top: 6px; }
p, ul, ol { margin: 14px 0; }
li { margin: 10px 0; padding-left: 2px; }
li > p { margin: 6px 0; }
/* the bold lead-in of a list item is the thing people scan for, so let it carry */
li > strong:first-child { color: var(--ink); font-weight: 680; }
ol { padding-left: 1.6em; }
ol > li::marker { color: var(--muted); font-weight: 700; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
/* the opening sentence orients the reader, so give it a little more voice than body copy */
.lead { font-size: 1.13rem; line-height: 1.55; color: var(--ink); margin: 0 0 24px; max-width: 42rem; }
blockquote {
  margin: 22px 0; padding: 14px 18px; background: var(--quote-bg);
  border-left: 3px solid var(--accent); border-radius: 0 6px 6px 0; color: var(--ink);
}
blockquote p { margin: 8px 0; }
blockquote > p:first-child { margin-top: 0; }
blockquote > p:last-child { margin-bottom: 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
article img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 6px; }

/* ---- toc ---- */
.toc {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 12px 18px 14px; margin: 0 0 34px;
}
.toc p { margin: 0 0 8px; font-weight: 600; font-size: 13px; color: var(--muted); }
.toc li { margin: 3px 0; }
.toc ul { margin: 0; padding-left: 20px; columns: 2; column-gap: 32px; }
.toc li { break-inside: avoid; }

/* ---- diagnostic branches ------------------------------------------------------------------
   The site's most useful content is a symptom ladder. "yes" is the answer (act here) and "no" is
   "not this, next rung", so yes is filled and no is quiet. Lowercase on purpose: these are words
   in a sentence, not labels bolted above it. */
.br {
  display: inline-block; font-size: 0.82em; font-weight: 700; line-height: 1;
  padding: 3px 7px; border-radius: 4px; margin: 0 5px; vertical-align: 1px;
  font-variant-numeric: normal;
}
.br-yes { background: var(--yes-bg); color: var(--yes-ink); }
.br-no { color: var(--no-ink); border: 1px solid var(--line-strong); }
/* an unconditional rung: a quiet pivot, not a chip */
.br-then { color: var(--muted); margin: 0 5px 0 6px; font-weight: 400; }

/* ---- code ---- */
/* a long wire frame in inline code has no spaces, so let it break rather than push the page wide */
/* tight horizontal padding: 5px left a visible gap before a following comma or paren, which read
   as a typo in frames like `$PING,*` sitting inside prose */
code {
  background: var(--code-bg); padding: 0.1em 0.3em; border-radius: 4px;
  font-size: 0.88em; overflow-wrap: anywhere;
}
p, li, td, th, dd { overflow-wrap: break-word; }
.code { position: relative; }
pre {
  /* padding-top clears the Copy button, which is absolutely positioned and opaque */
  background: var(--code-bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 40px 16px 14px; overflow-x: auto; margin: 16px 0;
}
pre code { background: none; padding: 0; }
.code .copy {
  position: absolute; top: 8px; right: 8px; background: var(--bg); color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: 6px; padding: 6px 10px;
  min-height: 32px; font: inherit; font-size: 12px; cursor: pointer;
}

/* ---- tables ---- */
/* Short tables scroll with the page. Only a tall one (>15 rows, marked by the build) gets its own
   scrollport, which is also what makes its sticky header work: capping every wrapper trapped the
   wheel over 2-row tables on a phone. */
.table-wrap { overflow-x: auto; margin: 16px 0; }
/* a hint that a clipped table can be swiped: without it the last column just stops mid-word */
.table-wrap { background:
  linear-gradient(to right, var(--bg) 30%, transparent) left / 32px 100% no-repeat local,
  linear-gradient(to left, var(--bg) 30%, transparent) right / 32px 100% no-repeat local,
  radial-gradient(farthest-side at 0 50%, rgb(0 0 0 / 14%), transparent) left / 14px 100% no-repeat scroll,
  radial-gradient(farthest-side at 100% 50%, rgb(0 0 0 / 14%), transparent) right / 14px 100% no-repeat scroll; }
.table-wrap.tall { overflow: auto; max-height: 80vh; }
/* a sticky header only has a scrollport inside .tall; elsewhere it is inert, so do not pretend */
.table-wrap.tall th { position: sticky; top: 0; }
table { border-collapse: collapse; width: 100%; font-size: 15.5px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { border-bottom: 2px solid var(--line-strong); }
th { background: var(--panel); font-weight: 600; }
tbody tr:hover { background: var(--panel); }

/* ---- generated tables ---- */
.dt-bar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.dt-bar input {
  flex: 1 1 220px; padding: 8px 12px; min-height: 36px; font: inherit;
  border: 1px solid var(--line-strong); border-radius: 6px; background: var(--bg); color: var(--ink);
}
.dt-count { color: var(--muted); font-size: 14px; }
.dt-note { color: var(--muted); font-size: 13px; }
.unheard { color: var(--muted); }
.community { color: var(--muted); }
.dt[data-table="sounds"] td:nth-child(7) { min-width: 24rem; }
.sound-details > div { margin-bottom: 5px; }
.sound-reviewed {
  display: inline-block; margin-bottom: 5px; padding: 2px 6px; border: 1px solid var(--line-strong);
  border-radius: 999px; color: var(--muted); font-size: 12px; font-weight: 600;
}
.sound-analysis { color: var(--muted); font-size: 13px; }
.dt [data-more] {
  background: var(--bg); border: 1px solid var(--line-strong); color: var(--ink);
  border-radius: 6px; padding: 8px 14px; min-height: 36px; font: inherit; cursor: pointer;
}
.todo { background: #ffd5d5; color: #7a0000; padding: 8px 12px; border-radius: 6px; }

/* ---- the download card (doc layout, /download) ---- */
.dl { border: 1px solid var(--line-strong); border-radius: 10px; padding: 20px 22px; margin: 18px 0 24px; background: var(--panel); max-width: 44rem; }
.dl-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.dl-name { font: 700 1.25rem/1.2 var(--display); text-transform: uppercase; letter-spacing: .01em; }
.dl-ver { font: 600 14px/1 var(--mono); color: var(--muted); }
.dl-btn {
  display: inline-flex; align-items: center; gap: 12px; margin: 16px 0 14px; min-height: 48px; padding: 0 22px;
  background: var(--accent); color: #fff; text-decoration: none; border-radius: 8px;
  font: 700 15px/1 var(--display); letter-spacing: .1em; text-transform: uppercase;
}
.dl-btn span { font: 600 13px/1 var(--mono); letter-spacing: 0; opacity: .8; }
.dl-btn:hover { filter: brightness(1.1); }
.dl-meta { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; font-size: 14px; }
.dl-meta dt { color: var(--muted); }
.dl-meta dd { margin: 0; overflow-wrap: anywhere; }

@media (max-width: 640px) {
  main { padding: 16px 14px 48px; }
  h1 { font-size: 1.8rem; }
  .toc ul { columns: 1; }
  /* The sound catalog carries long evidence, commands and measurements. On a phone each sound is
     a self-contained card so its id stays attached to those details instead of living 600px away. */
  .dt[data-table="sounds"] .table-wrap { overflow-x: visible; background: none; }
  .dt[data-table="sounds"] .table-wrap.tall { overflow-y: auto; max-height: 80vh; }
  .dt[data-table="sounds"] table,
  .dt[data-table="sounds"] tbody { display: block; width: 100%; }
  .dt[data-table="sounds"] thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .dt[data-table="sounds"] tbody tr { display: block; width: 100%; padding: 8px 10px; border: 1px solid var(--line); margin-bottom: 12px; background: var(--panel); }
  .dt[data-table="sounds"] tbody td { display: grid; grid-template-columns: minmax(7.5rem, 34%) minmax(0, 1fr); gap: 10px; width: 100%; min-width: 0; padding: 7px 0; overflow-wrap: anywhere; }
  .dt[data-table="sounds"] tbody td:nth-child(7) { min-width: 0; }
  .dt[data-table="sounds"] .sound-details { min-width: 0; }
  .dt[data-table="sounds"] tbody td::before { content: attr(data-label); color: var(--muted); font-weight: 600; }
  .dt[data-table="sounds"] tbody td[colspan] { display: block; }
  .dt[data-table="sounds"] tbody td[colspan]::before { display: none; }
  /* Nine nav links wrapped to three rows and made the header 184px, a quarter of a phone screen,
     on every page. They collapse behind the burger now and the header is one row. */
  .top { padding: 8px 12px; gap: 8px 10px; }
  .burger {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; flex: none; padding: 0; cursor: pointer;
    background: var(--bg); color: var(--muted);
    border: 1px solid var(--line-strong); border-radius: 8px;
  }
  .burger[aria-expanded="true"] { color: var(--ink); border-color: var(--ink); }
  .topnav {
    display: none; order: 4; width: 100%; flex-direction: column; gap: 0;
    margin: 6px -12px -8px; padding: 4px 12px 8px; border-top: 1px solid var(--line);
  }
  body.nav-open .topnav { display: flex; }
  .topnav a { min-height: 44px; font-size: 14px; border-bottom: 1px solid var(--line); }
  .topnav a:last-child { border-bottom: 0; }
  .topnav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--accent); padding-left: 10px; }
  .theme, .burger { width: 44px; height: 44px; }
  .wm { font-size: 19px; }
  .places { position: fixed; left: 12px; right: 12px; top: 64px; min-width: 0; }
  .find { flex: 1 1 auto; margin-left: 0; order: 3; }
  .results { width: 100%; right: auto; left: 0; }
}

/* =================================================================================================
   LANDING. Dark by design. One idea per screen, big type, one product shot per section, air.
   Everything below is scoped to body.landing / body.manual so the doc pages are untouched.
   ============================================================================================== */
body.landing, body.manual {
  font: 500 17px/1.6 var(--ui);
  background-image: linear-gradient(rgba(57,180,255,.028) 1px, transparent 1px), linear-gradient(90deg, rgba(57,180,255,.028) 1px, transparent 1px);
  background-size: 36px 36px;
}
body.landing .top, body.manual .top { border-color: var(--line); background: rgba(7,9,13,.82); }
body.landing .top .topnav, body.manual .top .topnav { margin-left: auto; }
.top-cta { flex: none; }
main.landing { max-width: none; padding: 0; }
main.landing a { text-decoration: none; }
main.landing a:hover { color: var(--accent-hover); }
/* the generic link hover must never recolour a button's label onto its own background */
main.landing .btn-acc:hover, body.landing .top .btn-acc:hover, body.manual .btn-acc:hover { color: var(--accent-ink); }
main.landing .btn-line:hover, body.manual .btn-line:hover { color: var(--ink); }
body.landing footer, body.manual footer { max-width: none; border-color: var(--line); color: var(--micro); font: 500 12px/1.6 var(--mono); letter-spacing: .06em; padding: 28px clamp(20px, 4.4vw, 64px); }

/* type */
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: .28em; color: var(--accent); text-transform: uppercase; margin: 0; }
main.landing h1 { font: 700 clamp(48px, 7.4vw, 108px)/.96 var(--display); letter-spacing: -.005em; text-transform: uppercase; margin: 0; text-wrap: balance; max-width: 1100px; }
main.landing h2 { font: 700 clamp(34px, 4.6vw, 66px)/1 var(--display); letter-spacing: 0; text-transform: uppercase; margin: 0; padding: 0; border: 0; text-wrap: balance; max-width: 980px; }
.lede { font: 500 clamp(17px, 1.5vw, 22px)/1.5 var(--ui); color: #c7d3de; margin: 0; max-width: 760px; text-wrap: pretty; }
.copy { font: 500 17px/1.6 var(--ui); color: #c7d3de; margin: 0; max-width: 700px; text-wrap: pretty; }

/* buttons: Mission Control's chamfer */
.btn {
  display: inline-flex; align-items: center; gap: 12px; min-height: 56px; padding: 0 30px;
  font: 600 15px/1 var(--display); letter-spacing: .18em; text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); transition: background .15s, border-color .15s, color .15s;
}
.btn .v { font: 500 12px/1 var(--mono); letter-spacing: .1em; opacity: .7; }
.btn, .top .btn, a.btn { text-decoration: none; }
/* the chamfer is a clip-path, which clips an outline: draw focus INSIDE the shape */
.btn:focus-visible { outline: 2px solid #fff; outline-offset: -4px; border-radius: 0; }
.btn-acc:focus-visible { outline-color: var(--accent-ink); }
.door:focus-visible, .tile:focus-visible, .card:focus-visible { outline: 2px solid var(--accent); outline-offset: -3px; border-radius: 0; }
.hero-find .find input:focus-visible { outline: 2px solid var(--accent); outline-offset: -3px; border-radius: 0; }
.topnav a:focus-visible { outline-offset: 0; }
.dl-btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.tile:hover { border-color: var(--accent); }
.chips .chip { transition: background .15s; } .chips .chip:hover { background: rgba(57,180,255,.06); }
.btn-acc { background: var(--accent); color: var(--accent-ink); } .btn-acc:hover { background: var(--accent-hover); color: var(--accent-ink); }
/* the outline button: a CSS border stops at the chamfer's diagonal, so the edge is a clipped layer
   underneath (::before) with the fill inset 1px on top of it (::after) */
.btn-line { position: relative; isolation: isolate; border: 0; color: var(--ink); background: transparent; clip-path: none; }
.btn-line::before, .btn-line::after { content: ''; position: absolute; pointer-events: none; }
.btn-line::before { inset: 0; z-index: -2; background: var(--line-strong); clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); transition: background .15s; }
.btn-line::after { inset: 1px; z-index: -1; background: rgba(12,16,22,.92); clip-path: polygon(0 0, calc(100% - 11.6px) 0, 100% 11.6px, 100% 100%, 0 100%); }
.btn-line:hover { color: var(--ink); } .btn-line:hover::before { background: var(--accent); }
.btn-line:focus-visible { outline: 2px solid var(--accent); outline-offset: -5px; }
.top .btn { min-height: 36px; padding: 0 18px; font-size: 12px; }
.cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* hero */
.hero { padding: clamp(56px, 6.5vw, 96px) clamp(20px, 4.4vw, 64px) clamp(64px, 7vw, 112px); display: flex; flex-direction: column; align-items: center; text-align: center; gap: clamp(22px, 2.4vw, 34px); }
.hero .lede { text-align: center; }
.hero .photo { width: min(1312px, 100%); margin-top: clamp(20px, 3vw, 40px); }
.hero .photo img { display: block; width: 100%; height: auto; }
.counts { display: flex; gap: clamp(24px, 4vw, 56px); justify-content: center; flex-wrap: wrap; padding: clamp(40px, 5vw, 72px) 0 0; }
.count { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.count b { font: 700 clamp(34px, 3.4vw, 48px)/1 var(--display); color: var(--ink); font-variant-numeric: tabular-nums; }
.count span { font: 500 11px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--micro); }

/* sections */
.feat { padding: clamp(80px, 11vw, 160px) clamp(20px, 4.4vw, 64px); display: flex; flex-direction: column; align-items: center; text-align: center; gap: clamp(20px, 2vw, 28px); }
.feat:nth-of-type(even) { background: var(--deep); }
.feat-head { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.feat .lede { text-align: center; }
.feat .copy { text-align: center; margin-top: 8px; }
.feat .cta { margin-top: 8px; }

/* the hero as a product shot: the console large, the phone HUD overlapping its lower left corner */
.hero-duo { position: relative; width: min(1312px, 100%); margin: clamp(20px, 3vw, 40px) auto 0; padding-bottom: clamp(48px, 7%, 92px); padding-left: clamp(0px, 2%, 24px); }
.hero-duo .shot.duo-main { width: 100%; }
.hero-duo .shot.duo-phone { position: absolute; left: 0; bottom: 0; width: 46%; box-shadow: 0 40px 120px rgba(0,0,0,.75), 0 0 0 1px rgba(57,180,255,.12); }
@media (max-width: 640px) { .hero-duo { padding-bottom: 20%; } .hero-duo .shot.duo-phone { width: 64%; } }
/* frames: a screenshot gets Mission Control's corner brackets; a photo gets none */
figure { margin: 0; }
.shot { position: relative; background: var(--code-bg); border: 1px solid var(--line-strong); box-shadow: 0 40px 120px rgba(0,0,0,.6), 0 0 0 1px rgba(57,180,255,.08); }
.shot::before, .shot::after { content: ''; position: absolute; width: 22px; height: 22px; pointer-events: none; }
.shot::before { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.shot::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.shot img { display: block; width: 100%; height: auto; }
.shot.wide { width: min(1312px, 100%); margin-top: clamp(20px, 3vw, 48px); }
/* a photo shown whole inside a section: same column as a wide shot, no brackets */
.feat .photo.wide { width: min(1312px, 100%); margin-top: clamp(20px, 3vw, 48px); }
.feat .photo.wide img { display: block; width: 100%; height: auto; }
.row { display: grid; gap: clamp(16px, 2.4vw, 32px); width: min(1312px, 100%); margin-top: clamp(20px, 3vw, 48px); }
.row-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.row-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
/* a phone-landscape screenshot reads as a device: round it like one */
.shot.phone { border-radius: 18px; padding: 8px; }
.shot.phone img { border-radius: 14px; }
.shot.phone::before, .shot.phone::after { display: none; }

/* the live HUD demo: a phone frame that holds a poster until tapped, then the real app */
.huddemo { position: relative; width: min(1000px, 100%); aspect-ratio: 891 / 411; margin-top: clamp(20px, 3vw, 48px); background-size: cover; background-position: center; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; overflow: hidden; }
/* a real element, not ::after: the phone frame's bracket rules hide pseudo-elements on .shot.phone */
.huddemo-veil { position: absolute; inset: 8px; border-radius: 14px; background: radial-gradient(ellipse at center, rgba(5,7,10,.94) 0%, rgba(5,7,10,.86) 55%, rgba(5,7,10,.72) 100%); backdrop-filter: blur(3px); z-index: 0; pointer-events: none; }
.huddemo .btn, .huddemo-hint { position: relative; z-index: 1; }
.huddemo .huddemo-go { min-height: 64px; padding: 0 40px; font-size: 17px; box-shadow: 0 0 0 1px rgba(57,180,255,.35), 0 18px 48px rgba(57,180,255,.25); }
.huddemo-hint { margin: 0; font: 500 13px/1.5 var(--ui); color: #c7d3de; max-width: 420px; text-align: center; padding: 0 16px; }
.huddemo.live .huddemo-veil { display: none; }
.huddemo iframe { position: absolute; inset: 8px; width: calc(100% - 16px); height: calc(100% - 16px); border: 0; border-radius: 14px; background: #02040a; }
@media (max-width: 640px) { .huddemo-hint { font-size: 12px; } .huddemo .btn { min-height: 48px; padding: 0 20px; } }
/* captions */
.caps { list-style: none; margin: clamp(32px, 4vw, 56px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 3vw, 48px); width: min(1200px, 100%); text-align: left; }
.caps li { margin: 0; padding: 0; font: 500 16px/1.6 var(--ui); color: #c7d3de; }
.caps li strong { display: block; font: 600 15px/1.3 var(--display); letter-spacing: .06em; text-transform: uppercase; color: var(--ink); margin-bottom: 10px; }
.caps:has(li:nth-child(2):last-child) { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.caps:has(li:nth-child(4):last-child) { grid-template-columns: repeat(4, minmax(0, 1fr)); }
/* the pinned layout: one wide shot holds on the left while its captions scroll past on the right */
@media (min-width: 1024px) {
  .feat.pin { max-width: calc(1312px + 2 * clamp(20px, 4.4vw, 64px)); margin-inline: auto; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); grid-template-areas: "head head" "lede lede" "shot caps" "rest rest"; column-gap: 56px; row-gap: 0; text-align: left; align-items: start; justify-items: start; }
  .feat.pin .feat-head { grid-area: head; align-items: flex-start; }
  .feat.pin > .lede { grid-area: lede; text-align: left; margin-top: 24px; }
  .feat.pin .pin-shot { grid-area: shot; align-self: stretch; width: 100%; }
  .feat.pin .shot.wide { position: sticky; top: calc(var(--header-h, 64px) + 24px); width: 100%; }
  .feat.pin .caps { grid-area: caps; grid-template-columns: 1fr; gap: 0; margin-top: clamp(20px, 3vw, 48px); width: 100%; }
  .feat.pin .caps li { min-height: 46vh; display: flex; flex-direction: column; justify-content: center; padding: 0 0 0 28px; border-left: 1px solid var(--line); }
  .feat.pin .caps li strong { font-size: 20px; }
  .feat.pin .row { grid-area: rest; margin-top: clamp(32px, 4vw, 64px); }
  .feat.pin .pin-shot .shot.wide { margin-top: clamp(20px, 3vw, 48px); }
}

/* tiles (game modes) */
.tiles { list-style: none; margin: clamp(24px, 3vw, 48px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; width: min(1312px, 100%); text-align: left; }
.tile { margin: 0; background: var(--panel); border: 1px solid var(--line); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%); padding: 32px; display: flex; flex-direction: column; gap: 16px; min-height: 250px; transition: border-color .15s; }
.tile:hover { border-color: var(--line-strong); }
.tile .abbr { font: 700 44px/1 var(--display); letter-spacing: .02em; }
.tile .name { font: 600 24px/1.1 var(--display); text-transform: uppercase; color: var(--ink); }
.tile p { margin: 0; font: 500 15px/1.5 var(--ui); color: var(--muted); }
.tile .badge, .card.weapon .badge { align-self: flex-start; font: 600 11px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: #ffb020; border: 1px solid #ffb020; padding: 6px 8px; }
.tile.wip .abbr { opacity: .55; }

/* chips (weapon classes) */
.chips { list-style: none; margin: clamp(20px, 2vw, 32px) 0 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.chip { margin: 0; font: 500 11px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--c); border: 1px solid var(--c); padding: 10px 12px; }
.chip b { font-weight: 700; margin-left: 4px; }

/* terminal */
.term { background: var(--code-bg); border: 1px solid var(--line); padding: clamp(18px, 2.4vw, 34px) clamp(18px, 2.8vw, 40px); margin: clamp(20px, 3vw, 48px) 0 0; font: 500 clamp(13px, 1.1vw, 16px)/1.8 var(--mono); color: #c7d3de; text-align: left; width: min(1000px, 100%); overflow-x: auto; box-shadow: 0 40px 120px rgba(0,0,0,.6); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%); border-radius: 0; }
.term .t-p { color: var(--accent); } .term .t-c { color: var(--micro); } .term .t-o { color: var(--muted); }
.term .t-l { display: block; min-height: 1.8em; }
.term.small { padding: 16px 18px; font-size: 14px; box-shadow: none; margin: 0; width: 100%; }

/* backdrop section: a full-bleed photo with the copy over its lower third */
.feat.backdrop { position: relative; min-height: clamp(560px, 46vw, 820px); justify-content: flex-end; align-items: flex-start; text-align: left; padding-bottom: clamp(56px, 7vw, 96px); overflow: hidden; }
.feat.backdrop .photo.bg { position: absolute; inset: 0; margin: 0; }
.feat.backdrop .photo.bg img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 62%; display: block; }
.feat.backdrop::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,9,13,0) 30%, rgba(7,9,13,.92) 100%); pointer-events: none; }
.feat.backdrop .over { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 22px; max-width: min(720px, 52%); }
.feat.backdrop .feat-head { align-items: flex-start; }
.feat.backdrop .lede, .feat.backdrop .copy { text-align: left; margin: 0; }

/* doors (the manual) */
.doors { list-style: none; margin: clamp(24px, 3vw, 48px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; width: min(1312px, 100%); text-align: left; }
.doors li { margin: 0; }
.door { display: flex; flex-direction: column; gap: 10px; height: 100%; background: var(--panel); border: 1px solid var(--line); clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); padding: 26px 24px; color: var(--ink); transition: border-color .15s; }
.door:hover { border-color: var(--accent); color: var(--ink); }
.door .t { font: 600 22px/1.1 var(--display); text-transform: uppercase; }
.door .s { font: 500 13px/1.45 var(--ui); color: var(--muted); }

/* cards (get it) */
.cards { list-style: none; margin: clamp(24px, 3vw, 48px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; width: min(1312px, 100%); text-align: left; }
.card { margin: 0; background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--accent); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%); padding: 32px; display: flex; flex-direction: column; gap: 16px; }
.card.c-mc { border-top-color: #2ecc71; } .card.c-src { border-top-color: #8aa0b4; }
.card .eyebrow { color: var(--micro); }
.card .name { font: 600 24px/1.1 var(--display); text-transform: uppercase; }
.card p { margin: 0; font: 500 15px/1.5 var(--ui); color: var(--muted); flex-grow: 1; }
.card dl { display: grid; grid-template-columns: 90px 1fr; gap: 8px 16px; margin: 0; font: 500 14px/1.4 var(--mono); }
.card dt { color: var(--micro); letter-spacing: .14em; text-transform: uppercase; } .card dd { margin: 0; color: #c7d3de; }
.card .btn { align-self: flex-start; min-height: 50px; }

/* arsenal (weapon cards): the .card language plus a bled-edge photo slot */
.card.weapon { padding: 0 32px 32px; overflow: hidden; }
.card.weapon .wshot { margin: 0 -32px; aspect-ratio: 16 / 9; background: var(--code-bg); }
.card.weapon .wshot img { display: block; width: 100%; height: 100%; object-fit: cover; }
.card.weapon .chip { align-self: flex-start; }
.card.weapon dl { grid-template-columns: 96px 1fr; }
/* a weapon that cannot kill by design (lethal: false) carries a dash here, not a bare 0; the
   card's own desc already says "It cannot kill", so the word itself is for assistive tech only (.vh) */
.card.weapon .wcant { color: var(--muted); font-weight: 600; }

/* the manual's front door: hero search */
.hero-find { width: min(760px, 100%); }
.hero-find .find { flex: none; margin: 0; width: 100%; }
.hero-find .find input { min-height: 60px; font: 500 17px/1 var(--ui); padding: 0 20px; border-radius: 0; background: var(--panel); border-color: var(--line-strong); color: var(--ink); clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); }
.hero-find .results { left: 0; right: 0; width: 100%; text-align: left; }
body.manual .doors { grid-template-columns: repeat(3, minmax(0, 1fr)); }
body.manual .door { min-height: 150px; }
body.manual .door .t { font-size: 26px; }
body.manual .caps { text-align: left; }

/* motion: reveal on scroll, count-up, terminal type-out. Off entirely under reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  html.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
  html.js [data-reveal].in { opacity: 1; transform: none; }
  /* headings fade in place: the browser scrolls to a heading where it IS, and a heading that is
     translated 18px down at that moment then slides up under the sticky header (browser-breaker, 2026-09-11) */
  html.js .feat-head [data-reveal], html.js .hero > h1 { transform: none; }
  .hero > [data-reveal]:nth-child(2) { transition-delay: .12s; }
  .hero > [data-reveal]:nth-child(3) { transition-delay: .24s; }
  html.js .hero .photo { opacity: 0; transform: scale(1.03); transition: opacity 1.2s ease .3s, transform 1.6s cubic-bezier(.2,.7,.2,1) .3s; }
  html.js .hero .photo.in { opacity: 1; transform: none; }
  .tiles.in .tile, .doors.in .door, .cards.in .card { animation: tile-in .7s cubic-bezier(.2,.7,.2,1) both; }
  .tiles.in .tile:nth-child(2), .doors.in li:nth-child(2) .door, .cards.in .card:nth-child(2) { animation-delay: .08s; }
  .tiles.in .tile:nth-child(3), .doors.in li:nth-child(3) .door, .cards.in .card:nth-child(3) { animation-delay: .16s; }
  .tiles.in .tile:nth-child(4), .doors.in li:nth-child(4) .door { animation-delay: .24s; }
  .tiles.in .tile:nth-child(5), .doors.in li:nth-child(5) .door { animation-delay: .32s; }
  .tiles.in .tile:nth-child(6), .doors.in li:nth-child(6) .door { animation-delay: .4s; }
  @keyframes tile-in { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
  html.js .term[data-reveal] .t-l { opacity: 0; }
  html.js .term.in .t-l { animation: line-in .25s steps(1) both; animation-delay: calc(var(--i, 0) * 120ms); }
  @keyframes line-in { to { opacity: 1; } }
  html.js .shot.wide { transition: opacity .9s ease, transform 1.1s cubic-bezier(.2,.7,.2,1); opacity: 0; transform: translateY(28px); }
  html.js .shot.wide.in { opacity: 1; transform: none; }
  .feat.backdrop .photo.bg img { transform: translateY(var(--px, 0)); will-change: transform; }
}

@media (max-width: 900px) {
  /* no room to overlay copy on the grenade: the photo becomes a normal figure above the copy */
  .feat.backdrop { min-height: 0; padding-top: clamp(64px, 9vw, 120px); justify-content: flex-start; }
  .feat.backdrop .photo.bg { position: static; width: 100%; aspect-ratio: 1440 / 760; margin-bottom: 28px; }
  .feat.backdrop .photo.bg img { object-position: 60% 60%; }
  .feat.backdrop::after { display: none; }
  .feat.backdrop .over { max-width: none; }
}
@media (max-width: 1023px) {
  .caps, .caps:has(li:nth-child(4):last-child) { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tiles, .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .doors, body.manual .doors { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .row-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .hero { text-align: left; align-items: flex-start; }
  .hero .lede, .feat .lede, .feat .copy { text-align: left; }
  .feat { align-items: flex-start; text-align: left; }
  .feat-head { align-items: flex-start; }
  .cta { justify-content: flex-start; width: 100%; }
  .cta .btn { width: 100%; justify-content: center; }
  .counts { justify-content: space-between; width: 100%; gap: 12px; }
  .count { align-items: flex-start; }
  .caps, .caps:has(li:nth-child(4):last-child), .caps:has(li:nth-child(2):last-child) { grid-template-columns: 1fr; }
  .tiles, .cards, .row-2, .row-3 { grid-template-columns: 1fr; }
  .doors, body.manual .doors { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .door .t, body.manual .door .t { font-size: 19px; }
  .card .name { font-size: 21px; }
  .tile { min-height: 0; padding: 22px; }
  .tile .abbr { font-size: 34px; }
  .chips { justify-content: flex-start; }
  .top-cta { display: none; }
  .feat.backdrop { min-height: 70vh; }
  main.landing h2 { font-size: 34px; }
}