/* =============================================================================
   PERMALINK - calm Unix typography (single hybrid lockup)
   Carbon chrome (nav + hero + footer). Ivory paper body. Amber accent.
   ============================================================================= */

/* -------- 0. fonts ---------------------------------------------------------- */

@font-face { font-family: 'Plex Mono'; font-style: normal; font-weight: 400;
  src: url(/fonts/IBMPlexMono-400-normal-latin\.woff2) format('woff2');
  font-display: swap;
  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: 'Plex Mono'; font-style: normal; font-weight: 400;
  src: url(/fonts/IBMPlexMono-400-normal-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

@font-face { font-family: 'Plex Mono'; font-style: normal; font-weight: 500;
  src: url(/fonts/IBMPlexMono-500-normal-latin\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+FEFF; }
@font-face { font-family: 'Plex Mono'; font-style: normal; font-weight: 500;
  src: url(/fonts/IBMPlexMono-500-normal-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

@font-face { font-family: 'Plex Mono'; font-style: normal; font-weight: 700;
  src: url(/fonts/IBMPlexMono-700-normal-latin\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+FEFF; }
@font-face { font-family: 'Plex Mono'; font-style: normal; font-weight: 700;
  src: url(/fonts/IBMPlexMono-700-normal-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

@font-face { font-family: 'Plex Serif'; font-style: normal; font-weight: 500;
  src: url(/fonts/IBMPlexSerif-500-normal-latin\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+FEFF; }
@font-face { font-family: 'Plex Serif'; font-style: normal; font-weight: 500;
  src: url(/fonts/IBMPlexSerif-500-normal-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

@font-face { font-family: 'Plex Serif'; font-style: normal; font-weight: 600;
  src: url(/fonts/IBMPlexSerif-600-normal-latin\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+FEFF; }
@font-face { font-family: 'Plex Serif'; font-style: normal; font-weight: 600;
  src: url(/fonts/IBMPlexSerif-600-normal-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

@font-face { font-family: 'Inter'; font-style: normal; font-weight: 100 900;
  src: url(/fonts/Inter-vf-latin\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+FEFF; }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 100 900;
  src: url(/fonts/Inter-vf-latin-ext\.woff2) format('woff2');
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }


/* -------- 1. design tokens -------------------------------------------------- */

:root {
  --serif: 'Plex Serif', 'Iowan Old Style', Cambria, Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono:  'Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ink:    #141414;
  --bone:   #F4EDDB;
  --paper:  #FAF6E8;
  --carbon: #0E1116;
  --amber:  #C9851C;
  --amber-bright: #E5BB1F;
  --amber-ink:    #8C5E10;   /* AA-compliant amber for foreground text/links on light (4.8:1) */
  --mute:   #5E6470;
  --ok:     #7BB531;
  --err:    #B33A3A;

  --rule-l: rgba(20, 20, 20, 0.18);
  --rule-d: rgba(255, 255, 255, 0.16);

  /* hybrid lockup: paper body, carbon chrome, amber accent */
  --bg:         var(--bone);
  --bg-alt:     var(--paper);
  --fg:         var(--ink);
  --fg-mute:    var(--mute);
  --rule:       var(--rule-l);
  --accent:     var(--amber);
  --link:       var(--amber-ink);
  --chrome-bg:  var(--carbon);
  --chrome-fg:  var(--bone);
  --chrome-rule: var(--rule-d);
  --hero-bg:    var(--carbon);
  --hero-fg:    var(--bone);

  --gutter:    clamp(1rem, 2vw, 1.5rem);
  --pad-x:     clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(3.5rem, 7vw, 6rem);
}


/* -------- 2. resets & primitives ------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 450 15.5px/1.65 var(--sans);
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; height: auto; display: block; }

a { color: var(--link); text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 0.05em; transition: opacity .15s ease; }
a:hover { opacity: 0.7; }
a.bare { border-bottom: none; }

::selection { background: var(--accent); color: var(--bone); }

/* skip-to-content: off-screen until focused, then slides into the top-left */
.skip-link {
  position: absolute;
  left: 0;
  top: -3rem;
  z-index: 100;
  background: var(--carbon);
  color: var(--bone);
  border: 1px solid var(--amber-bright);
  border-bottom: none;
  padding: 0.6rem 1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: top .15s ease;
}
.skip-link:focus { top: 0; }

p { margin: 0 0 1.2em; }
ul, ol { margin: 0 0 1.2em; padding-left: 1.4em; }
li { margin-bottom: 0.4em; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }

code, kbd, samp, pre, .mono { font-family: var(--mono); font-size: 0.92em; }
code:not(pre code) {
  padding: 0.08em 0.4em;
  background: rgba(201, 133, 28, 0.07);
  border-radius: 2px;
  color: var(--link);
  font-weight: 500;
}
pre {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  padding: 1rem 1.2rem;
  overflow-x: auto;
  font-size: 0.85em;
  line-height: 1.55;
  margin: 1.5rem 0;
}


/* -------- 3. typography scale ---------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.18;
  margin: 0 0 0.6em;
  color: var(--fg);
}

h1 { font-size: clamp(1.7rem, 3.6vw, 2.45rem); margin-top: 0; line-height: 1.22; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); margin-top: 2.4em; }
h3 { font-size: clamp(1.18rem, 2.2vw, 1.4rem); margin-top: 2em; }
h4 { font-size: 1.05rem; margin-top: 1.6em; }
h5 { font-size: 0.92rem; font-family: var(--mono); font-weight: 500;
     text-transform: uppercase; letter-spacing: 0.18em; margin-top: 1.4em; color: var(--fg-mute); }

/* hybrid: chrome sections render mono headings; body keeps serif */
.section--chrome h1,
.section--chrome h2,
.hero--chrome h1,
.hero--chrome h2 {
  font-family: var(--mono);
  font-weight: 700;
}
/* hero H1 is mono (wide): scale it down on small screens so the first line
   stays intact instead of wrapping the highlighted term (wraps below ~500px). */
.hero--chrome h1 { font-size: clamp(1.3rem, 4vw, 2.45rem); }

.lede {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.6vw, 1.18rem);
  line-height: 1.55;
  color: var(--fg);
  margin: 0 0 1.5em;
}
/* body paragraphs on chrome backgrounds soften to bone-85 (matches .lede) */
.hero--chrome p,
.section--chrome p       { color: rgba(244, 237, 219, 0.85); }
.hero--chrome .lede,
.section--chrome .lede   { color: rgba(244, 237, 219, 0.85); }
.hero--chrome .small,
.section--chrome .small  { color: rgba(244, 237, 219, 0.55); }

.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--fg-mute);
  display: block;
  margin: 0 0 1rem;
}
/* breadcrumb pattern inside .kicker (Home · Section · Current) */
.kicker a       { color: inherit; border-bottom: none; }
.kicker a:hover { color: var(--link); opacity: 1; }
.kicker .here   { color: var(--link); }

small, .small { font-size: 0.86rem; color: var(--fg-mute); }

blockquote {
  margin: 2rem 0;
  padding: 0 0 0 1.4rem;
  border-left: 2px solid var(--accent);
  font-family: var(--serif);
  font-size: 1.1em;
  color: var(--fg);
}


/* -------- 4. layout primitives --------------------------------------------- */

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
/* reading-width columns for long-form prose sections.
   Constrains the whole container so each man-head bar stays aligned with the
   text it heads (~65-char measure after padding). */
.wrap--text   { max-width: 44rem; }
.wrap--narrow { max-width: 60rem; }

main { display: block; }

.section { padding: var(--section-y) 0; position: relative; }
.section--alt {
  background-color: var(--bg-alt);
  background-image: radial-gradient(rgba(20, 20, 20, 0.10) 0.9px, transparent 0.9px);
  background-size: 22px 22px;
  background-position: 0 0;
}
.section--chrome {
  background-color: var(--carbon);
  background-image: radial-gradient(rgba(229, 187, 31, 0.09) 0.9px, transparent 0.9px);
  background-size: 22px 22px;
  background-position: 0 0;
  color: var(--bone);
  --fg: var(--bone);
  --bg: var(--carbon);
  --fg-mute: rgba(244, 237, 219, 0.62);
  --rule: var(--rule-d);
  --accent: var(--amber-bright);
  --link: var(--amber-bright);
}
.section--chrome a { color: var(--amber-bright); }
.section--chrome ::selection { background: var(--amber-bright); color: var(--carbon); }

.cols-2   { display: grid; grid-template-columns: 1fr; gap: 2rem var(--gutter); }
.cols-3   { display: grid; grid-template-columns: 1fr; gap: 2rem var(--gutter); }
.cols-4   { display: grid; grid-template-columns: 1fr; gap: 1.5rem var(--gutter); }
.cols-2-1 { display: grid; grid-template-columns: 1fr; gap: 2rem var(--gutter); }
@media (min-width: 760px) {
  .cols-2 { grid-template-columns: 1fr 1fr; }
  .cols-3 { grid-template-columns: 1fr 1fr 1fr; }
  .cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
  .cols-2-1 { grid-template-columns: 2fr 1fr; }
}
@media (min-width: 760px) {
  .cols-2:has(> article + article) {
    position: relative;
    column-gap: 3.5rem;
  }
  .cols-2:has(> article + article)::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--rule);
  }
}

/* homepage: the two flagship services as boxed panels with an amber top rule
   (the "two pillars"); the cols-2 centre divider is suppressed for these. */
.cols-2.svc-cards { column-gap: var(--gutter); }
.cols-2.svc-cards::before { content: none; }
.svc-cards > article {
  background: var(--bone);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--accent);
  padding: 1.5rem 1.4rem 1.4rem;
}

.row-rule > * + * { border-top: 1px solid var(--rule); padding-top: 1.4rem; margin-top: 1.4rem; }

.center { text-align: center; }
.muted  { color: var(--fg-mute); }
.amber  { color: var(--link); }


/* -------- 5. brand device - manpage-style section header ------------------- */

.man-head {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
  border-top: 1px solid var(--fg-mute);
  border-bottom: 1px solid var(--fg-mute);
  padding: 0.7rem 0;
  margin: 0 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  line-height: 1.25;
}
* + .man-head { margin-top: 2rem; }
.man-head__l { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.man-head__l b { font-weight: 700; letter-spacing: 0.14em; }
/* title + middot + subtitle as one inline run, so the separator stays inline
   after the title instead of orphaning to the next line as a stray bullet */
.man-head__t { min-width: 0; }
/* descriptive subtitle: sentence case (reserve all-caps for the short title
   label) and normal tracking; narrower than caps, so headers wrap less often */
/* mobile: subtitle drops to its own line under the title (manual-page style),
   so the header never wraps mid-phrase and §N stays clean on the title row. */
.man-head__sub {
  display: block;
  margin-top: 0.15rem;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  color: var(--fg-mute);
}
/* desktop: there's room, so render inline with a middot separator. */
@media (min-width: 760px) {
  .man-head__sub { display: inline; margin-top: 0; }
  .man-head__sub::before { content: "·\00A0"; margin-left: 0.1em; }
}
.man-head__l .ico {
  color: var(--accent);
  flex: 0 0 auto;
  width: 1.35rem;
  height: 1.35rem;
}
.man-head__r {
  color: var(--fg-mute);
  font-weight: 400;
  letter-spacing: 0.16em;
  white-space: nowrap;
  font-size: 0.82rem;
}


/* -------- 6. dotted-leader ledger ------------------------------------------ */

.ledger { margin: 0 0 2rem; padding: 0; list-style: none; }
.ledger li {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 1rem;
  margin-bottom: 0;
}
.ledger li:first-child { border-top: 1px solid var(--rule); }
.ledger .l { flex: 0 1 auto; }
.ledger .dots {
  flex: 1 1 auto;
  border-bottom: 1px dotted var(--fg-mute);
  transform: translateY(-0.32em);
  margin: 0 0.3rem;
  min-width: 1.5rem;
  opacity: 0.6;
}
.ledger .r {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 0.92em;
  font-weight: 500;
  color: var(--fg);
  white-space: nowrap;
  text-align: right;
}
.ledger .r--mute { color: var(--fg-mute); font-weight: 400; }
.ledger .r .approx {
  display: block;
  color: var(--fg-mute);
  font-weight: 400;
  margin-top: 0.15rem;
  letter-spacing: 0;
}

/* ledger variant: short term + dotted leader + mono tag on the first line,
   descriptive prose wraps to its own line below (definition-style rows). */
.ledger--def li { flex-wrap: wrap; padding: 0.8rem 0; }
.ledger--def .desc {
  flex: 1 0 100%;
  margin-top: 0.35rem;
  padding-left: 0;
  color: var(--fg-mute);
  font-size: 0.95em;
  line-height: 1.55;
}
/* rows that lead with an icon (e.g. the five elements) indent the description
   to sit under the label rather than under the icon */
.ledger--def li:has(.ico) .desc { padding-left: 1.5rem; }


/* -------- 7. step cards (numbered process flow) ---------------------------- */

.pills {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}
@media (min-width: 720px) {
  .pills { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
}
.pill {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 1.1rem 1.3rem 1.2rem;
  position: relative;
  background: var(--bg-alt);
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--fg-mute);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.pill__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.pill__n {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  flex: 0 0 auto;
  line-height: 1;
}
.pill b {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--fg);
  line-height: 1.3;
}
.pill p { margin: 0; }
.pill > *:not(.pill__head):not(p) { display: inline; }


/* -------- 8. capability tiles ---------------------------------------------- */

.tiles {
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--rule);
  margin: 2rem 0;
}
@media (min-width: 700px)  { .tiles { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .tiles { grid-template-columns: 1fr 1fr; } }

.tile {
  padding: 1.6rem 0 1.6rem 0;
  padding-right: 1.5rem;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.8rem 1.1rem;
  align-items: start;
}
@media (min-width: 700px) {
  .tile:nth-child(odd)  { padding-right: 1.5rem; border-right: 1px solid var(--rule); }
  .tile:nth-child(even) { padding-left:  1.5rem; }
}
.tile__icon {
  width: 2.6rem; height: 2.6rem;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 2px;
  background: rgba(201, 133, 28, 0.05);
}
.tile__icon svg { width: 1.4rem; height: 1.4rem; }
.tile__body { min-width: 0; }
.tile__body h4 { margin: 0 0 0.3rem; font-family: var(--sans); font-size: 1.02rem; font-weight: 600; }
.tile__body p { margin: 0; font-size: 0.92rem; color: var(--fg-mute); }

/* tight headings inside cards / pill / tile bodies */
.tile__body h3, .pill h3, .pill h4 { margin-top: 0.4rem; }


/* -------- 9. hairline icon system ------------------------------------------ */
/*
  Inline SVG hairline icons. 24x24 viewBox, 1.4 stroke, currentColor.
  Used inline next to .man-head titles, in tiles, in section heros.
*/
.ico {
  display: inline-block;
  width: 1.1em;
  height: 1.1em;
  vertical-align: -0.18em;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ico--lg { width: 1.4rem; height: 1.4rem; vertical-align: middle; }
.ico--xl { width: 2rem; height: 2rem; vertical-align: middle; }


/* -------- 10. nav (replaces Bootstrap navbar) ------------------------------ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--chrome-bg);
  color: var(--chrome-fg);
  border-bottom: 1px solid var(--chrome-rule);
  font-family: var(--sans);
  font-size: 0.93rem;
  --accent: var(--amber-bright);
  --link: var(--amber-bright);
  --nav-mute: rgba(255, 255, 255, 0.65);
}

.nav__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 56px;
}

.nav__brand {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  color: inherit;
  border-bottom: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  line-height: 1;
}
.nav__brand b {
  font-weight: 700;
  position: relative;
  top: 1px;
}
.nav__brand .br {
  color: var(--accent);
  letter-spacing: -0.08em;
  font-size: 0.94em;
  position: relative;
  top: 1px;
}

.nav__list {
  display: none;
  list-style: none;
  margin: 0; padding: 0;
  gap: 1rem;
  align-items: center;
}
.nav__list > li { margin: 0; position: relative; }
.nav__list a {
  color: inherit;
  border-bottom: none;
  padding: 0.4rem 0.2rem;
  display: inline-block;
  position: relative;
  top: 1px;
}
.nav__list a:hover { opacity: 1; color: var(--accent); }
.nav__caret:hover { color: var(--accent); opacity: 1; }
.nav__list .is-active > a,
.nav__list .is-active > .nav__caret { color: var(--accent); }
.nav__list .is-active > a::after {
  content: "";
  position: absolute;
  left: 0.2rem; right: 0.2rem;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
}

.nav__caret {
  background: none; border: none;
  font: inherit; color: inherit;
  cursor: pointer;
  padding: 0.4rem 0.2rem;
  display: inline-flex; align-items: center; gap: 0.3rem;
  position: relative; top: 1px;
}
.nav__caret::after {
  content: "";
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  opacity: 0.55;
  transform: translateY(1px);
}

.nav__menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: -0.5rem;
  min-width: 240px;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-rule);
  padding: 0.4rem 0;
  list-style: none;
  margin: 0;
  z-index: 60;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.18);
}
.nav__menu > li { margin: 0; }
.nav__menu a {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.92rem;
  letter-spacing: 0;
}
.nav__menu a:hover { background: rgba(229, 187, 31, 0.12); color: var(--accent); }
.nav__menu .is-current a { color: var(--accent); font-weight: 600; }
.nav__menu hr { margin: 0.3rem 0; border-color: var(--chrome-rule); }

.has-menu.is-open .nav__menu { display: block; }

.nav__contact {
  display: none;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: inherit;
  border: 1px solid currentColor;
  padding: 0.4rem 0.9rem;
  background: transparent;
  align-items: center;
  gap: 0.4rem;
}
.nav__contact:hover {
  background: var(--accent);
  color: var(--carbon);
  border-color: var(--accent);
  opacity: 1;
}

.nav__burger {
  margin-left: auto;
  background: none; border: 1px solid var(--chrome-rule);
  color: inherit;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}

@media (min-width: 980px) {
  .nav__list { display: flex; }
  .nav__contact { display: inline-flex; }
  .nav__burger { display: none; }
  .nav-item--contact-mobile { display: none; }
}

/* mobile drawer */
.nav.is-open .nav__list {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  position: absolute;
  left: 0; right: 0;
  top: 100%;
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--chrome-rule);
  padding: 0 var(--pad-x) 1rem;
}
.nav.is-open .nav__list > li { padding: 0; border-bottom: 1px solid var(--chrome-rule); }
.nav.is-open .nav__list > li:last-child { border-bottom: none; }
.nav.is-open .nav__list > li > a,
.nav.is-open .nav__list > li > .nav__caret {
  display: flex;
  align-items: center;
  width: calc(100% + 2 * var(--pad-x));
  margin: 0 calc(-1 * var(--pad-x));
  padding: 0.55rem var(--pad-x);
  top: 0;
}
.nav.is-open .nav__list > li > .nav__caret::after { margin-left: auto; }
.nav.is-open .nav__list > li > a:hover,
.nav.is-open .nav__list > li > .nav__caret:hover {
  background: rgba(201, 133, 28, 0.12);
  color: var(--accent);
  opacity: 1;
}
.nav.is-open .nav__menu {
  display: block;
  position: static;
  border: none;
  box-shadow: none;
  padding: 0 0 0.35rem 0;
  background: transparent;
  min-width: 0;
}
.nav.is-open .nav__menu a { padding: 0.55rem 1rem 0.55rem 1.5rem; }
.nav.is-open .nav__list .is-active > a::after { display: none; }


/* -------- 11. footer ------------------------------------------------------- */

.foot {
  background-color: var(--carbon);
  background-image: radial-gradient(rgba(229, 187, 31, 0.08) 0.9px, transparent 0.9px);
  background-size: 22px 22px;
  background-position: 0 0;
  color: var(--bone);
  border-top: 1px solid var(--rule-d);
  font-family: var(--sans);
  font-size: 0.92rem;
  padding: 4rem 0 2rem;
  --fg: var(--bone);
  --fg-mute: rgba(244, 237, 219, 0.55);
  --rule: var(--rule-d);
  --accent: var(--amber-bright);
  --link: var(--amber-bright);
}
.foot a { color: var(--bone); border-bottom: 1px solid rgba(244, 237, 219, 0.25); }
.foot a:hover { color: var(--amber-bright); border-color: var(--amber-bright); opacity: 1; }
.foot__brand {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--bone);
  border-bottom: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  line-height: 1;
  margin-bottom: 1rem;
}
.foot__brand .br {
  color: var(--amber-bright);
  letter-spacing: -0.08em;
  font-size: 0.94em;
}
.foot__cols {
  display: grid;
  gap: 2.5rem 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px)  { .foot__cols { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .foot__cols { grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr; } }

.foot h6 {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244, 237, 219, 0.55);
  margin: 0 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule-d);
}
.foot ul { list-style: none; padding: 0; margin: 0; }
.foot ul li { margin-bottom: 0.45rem; }
.foot ul a { font-size: 0.92rem; }

.foot__addr { color: rgba(244, 237, 219, 0.78); line-height: 1.6; font-size: 0.9rem; }
.foot__addr a { color: rgba(244, 237, 219, 0.92); }

.foot__bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule-d);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: rgba(244, 237, 219, 0.55);
}
.foot__bottom a { color: rgba(244, 237, 219, 0.78); border: none; }


/* -------- 12. hero + buttons ----------------------------------------------- */

.hero {
  background-color: var(--hero-bg);
  color: var(--hero-fg);
  padding: clamp(4rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5rem);
  position: relative;
  overflow: hidden;
}
.hero--chrome {
  background-color: var(--carbon);
  background-image: radial-gradient(rgba(229, 187, 31, 0.10) 0.9px, transparent 0.9px);
  background-size: 22px 22px;
  background-position: 0 0;
  color: var(--bone);
  --fg: var(--bone);
  --bg: var(--carbon);
  --fg-mute: rgba(244, 237, 219, 0.62);
  --accent: var(--amber-bright);
  --link: var(--amber-bright);
  --rule: var(--rule-d);
}
.hero__inner { max-width: 1180px; margin: 0 auto; padding: 0 var(--pad-x); }

/* Console session frame */
.session {
  background: var(--carbon);
  color: var(--bone);
  border: 1px solid var(--rule-d);
  font-family: var(--mono);
  font-size: clamp(0.92rem, 1.4vw, 1rem);
  line-height: 1.65;
  padding: 0;
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
}
.session__bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--rule-d);
  font-size: 0.78rem;
  color: rgba(244, 237, 219, 0.6);
  letter-spacing: 0.04em;
}
.session__dots { display: inline-flex; gap: 0.35rem; margin-right: 0.8rem; }
.session__dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(244, 237, 219, 0.22);
}
.session__body { padding: 1.2rem 1.4rem 1.6rem; }
.session__line { display: block; }
.session__line.cmd::before { content: "$ "; color: var(--amber-bright); }
.session__line.cmd--root::before { content: "# "; color: var(--amber-bright); }
.session__line.out { color: rgba(244, 237, 219, 0.8); }
.session__line.cur::after {
  content: "";
  display: inline-block;
  width: 1ch;
  height: 1.1em;
  vertical-align: text-bottom;
  background: var(--amber-bright);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Buttons - flat, square, mono. */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.85rem 1.4rem;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}
.btn:hover { background: var(--fg); color: var(--bg); opacity: 1; }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--carbon);
  font-weight: 700;
}
.btn--primary:hover { background: transparent; color: var(--accent); }
.section--chrome .btn--primary,
.hero--chrome   .btn--primary {
  background: var(--amber-bright);
  border-color: var(--amber-bright);
  color: var(--carbon);
}
.section--chrome .btn--primary:hover,
.hero--chrome   .btn--primary:hover {
  background: transparent;
  color: var(--amber-bright);
}
.btn .ico { width: 0.95em; height: 0.95em; }
.btn + .btn { margin-left: 0.6rem; }

/* Button row: wraps cleanly on narrow viewports (vertical gap, no stray offset). */
.btn-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.btn-row .btn + .btn { margin-left: 0; }


/* -------- 12.1 highlight tile (key-word emphasis) ------------------------- */
/*
  AQF / BarePack / Camelia move: a solid-coloured tile sits under one word
  in a headline. The tile is part of the wordmark, not a hover or link state.
  Use sparingly: one tile per page, never two in the same paragraph.
*/

.mark {
  background: var(--accent);
  color: var(--carbon);
  padding: 0 0.32em 0.04em;
  border-radius: 2px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  font-style: normal;
  white-space: nowrap;   /* the highlight tile is a wordmark: never split it across lines */
}
.hero--chrome   .mark,
.section--chrome .mark { background: var(--amber-bright); color: var(--carbon); }


/* -------- 13. arrow link --------------------------------------------------- */

.arrow {
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-bottom: 1px solid currentColor;
  color: var(--link);
  display: inline-block;
}
.arrow::after {
  content: " →";
  display: inline-block;
  transition: transform .15s ease;
}
.arrow:hover::after { transform: translateX(3px); }


/* -------- 14. forms (contact) --------------------------------------------- */

.form-grid { display: grid; gap: 1.3rem; max-width: 640px; margin: 2rem 0 0; }
.form-grid label {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-bottom: 0.4rem;
}
.form-grid input[type="text"],
.form-grid input[type="email"],
.form-grid textarea {
  width: 100%;
  font: 400 1rem/1.5 var(--sans);
  color: var(--fg);
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  padding: 0.7rem 0.9rem;
  border-radius: 0;
  outline: none;
  transition: border-color .15s ease;
}
.form-grid textarea { min-height: 12rem; resize: vertical; }
.form-grid input:focus, .form-grid textarea:focus { border-color: var(--accent); }
.form-grid .err {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--err);
  background: rgba(179, 58, 58, 0.06);
  border-left: 2px solid var(--err);
  padding: 0.7rem 1rem;
  margin: 1rem 0;
}
.form-grid .ok {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--accent);
  border-left: 2px solid var(--accent);
  padding: 0.7rem 1rem;
  margin: 1rem 0;
}


/* -------- 15. tables ------------------------------------------------------- */

table.table { width: 100%; border-collapse: collapse; font-family: var(--sans); margin: 1.5rem 0 2rem; font-size: 0.95rem; }
table.table th, table.table td { text-align: left; padding: 0.85rem 0.8rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.table th {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-mute);
  border-bottom: 2px solid var(--fg);
}
table.table td.num { font-family: var(--mono); white-space: nowrap; text-align: right; }


/* -------- 16. utilities ---------------------------------------------------- */

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.4rem; }
.mb-2 { margin-bottom: 0.8rem; }
.mb-3 { margin-bottom: 1.2rem; }
.mb-4 { margin-bottom: 1.8rem; }
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.4rem; }
.mt-2 { margin-top: 0.8rem; }
.mt-3 { margin-top: 1.2rem; }
.mt-4 { margin-top: 1.8rem; }
.mt-5 { margin-top: 2.4rem; }
.mt-snug  { margin-top: 0.6rem; }
.mt-loose { margin-top: 1.4rem; }
.mt-roomy { margin-top: 1.6rem; }
.mt-2rem  { margin-top: 2rem; }

.flex { display: flex; gap: 1rem; flex-wrap: wrap; }
.flex--between { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.text-center { text-align: center; }


/* -------- 17. back-to-top -------------------------------------------------- */

.totop {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 30;
  width: 44px; height: 44px;
  display: none;
  align-items: center; justify-content: center;
  background: var(--carbon);
  color: var(--bone);
  border: 1px solid var(--rule-d);
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 0;
}
.totop.is-visible { display: inline-flex; }
.totop:hover { background: var(--amber-bright); color: var(--carbon); }


/* -------- 18. glossary ----------------------------------------------------- */

.glossary { margin: 2rem 0; }
.glossary dt {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--fg);
  margin-top: 1.4rem;
  letter-spacing: 0.02em;
}
.glossary dt:first-child { margin-top: 0; }
.glossary dd {
  margin: 0.3rem 0 0 0;
  padding: 0 0 0.4rem 1.5rem;
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 760px) {
  .glossary {
    display: grid;
    grid-template-columns: 16rem 1fr;
    gap: 0 2rem;
    align-items: baseline;
  }
  .glossary dt {
    grid-column: 1;
    text-align: right;
    border-right: 1px solid var(--rule);
    padding-right: 1.2rem;
    margin-top: 0;
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
  }
  .glossary dt + dd {
    grid-column: 2;
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
    padding-left: 0;
    border-bottom: 1px solid var(--rule);
  }
  .glossary dt:first-child { padding-top: 0.8rem; }
}


/* -------- 19. diagram strip (hairline icon row) ---------------------------- */

.diagram {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  margin: 2.4rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 1.6rem 0;
}
@media (min-width: 720px) {
  .diagram { grid-template-columns: repeat(4, 1fr); gap: 1rem; }
}
.diagram__cell {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.diagram__cell .ico { color: var(--accent); width: 1.8rem; height: 1.8rem; }
.diagram__cell b { color: var(--fg); font-weight: 700; letter-spacing: 0.18em; }


/* -------- 20. focus -------------------------------------------------------- */

:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }


/* -------- 21. reduced motion ----------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .session__line.cur::after { animation: none; }
  html { scroll-behavior: auto; }
}


/* -------- 22. print -------------------------------------------------------- */

@media print {
  .nav, .foot, .totop { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .section { padding: 0.6rem 0; }
  a { color: #000; }
}