/* ==========================================================================
   Harvey Software Solutions
   Corporate-institutional one-page site. Ink + institutional blue.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Ink */
  --ink:            #14181d;
  --ink-deep:       #0e1114;
  --ink-70:         #3f474f;
  --ink-60:         #4d555d;
  --ink-55:         #5b636b;
  --ink-40:         #79838f;
  --ink-35:         #8d959d;
  --ink-30:         #9aa2aa;

  /* Accent */
  --blue:           #1c4e80;
  --blue-soft:      #e6eef5;

  /* Surfaces */
  --surface:        #ffffff;
  --surface-alt:    #f4f5f6;
  --surface-hover:  #ecedef;

  /* Rules */
  --rule-strong:    #14181d;
  --rule:           #d9dde1;
  --rule-soft:      #dfe2e5;
  --rule-softest:   #e4e7ea;
  --rule-field:     #c6ccd2;

  /* On dark */
  --dark-rule:      #2c333b;
  --dark-dim:       #7b8794;
  --dark-mid:       #a4aeb9;
  --dark-bright:    #e6eaee;
  --dark-meta:      #9aa4b0;

  /* Type */
  --sans:  'IBM Plex Sans', system-ui, -apple-system, Segoe UI, sans-serif;
  --mono:  'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;

  /* Rhythm */
  --pad-x:      clamp(20px, 4.4vw, 56px);
  --section-y:  clamp(52px, 6vw, 72px);
  --header-h:   80px;
  --utility-h:  34px;

  /* Motion */
  --ease:       cubic-bezier(.22, .68, .32, 1);
  --ease-out:   cubic-bezier(.16, 1, .3, 1);
  --t-fast:     140ms;
  --t-mid:      260ms;
  --t-slow:     620ms;
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, p, dl, dd, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }

a { color: var(--blue); }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0; left: 0;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  font: 500 13px/1 var(--sans);
  text-decoration: none;
  transform: translateY(-110%);
  transition: transform var(--t-mid) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* --------------------------------------------------------------------------
   3. Shared pieces
   -------------------------------------------------------------------------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font: 500 11px/1 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-40);
}
.eyebrow--blue      { color: var(--blue); margin-bottom: 34px; }
.eyebrow--onDark    { color: var(--dark-dim); }
.eyebrow__rule {
  width: 26px; height: 2px;
  background: var(--blue);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform var(--t-slow) var(--ease-out) 260ms;
}
.reveal.is-visible .eyebrow__rule,
.eyebrow.is-visible .eyebrow__rule { transform: scaleX(1); }

.section__title {
  font: 400 clamp(1.75rem, 1rem + 2.3vw, 2.375rem)/1.15 var(--serif);
  letter-spacing: -.01em;
  text-wrap: pretty;
}
.section__title--sm    { font-size: clamp(1.6rem, 1rem + 1.7vw, 2rem); line-height: 1.22; }
.section__title--wide  { max-width: 24ch; margin-bottom: 46px; }
.section__title--onDark { color: #fff; max-width: 20ch; margin-bottom: 20px; }

.section {
  padding: var(--section-y) var(--pad-x);
  border-top: 1px solid var(--rule);
}
.section--capabilities { border-top-color: var(--rule-strong); background: var(--surface); padding-bottom: 8px; }
.section--approach     { background: var(--surface-alt); margin-top: clamp(36px, 5vw, 56px); }
.section--tech         { background: var(--surface); }
.section--about        { background: var(--surface-alt); }
.section--contact      { background: var(--ink); color: #fff; border-top: 0; padding-top: clamp(56px, 6.4vw, 76px); padding-bottom: clamp(56px, 6.4vw, 76px); }

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 44px;
}
.section__aside {
  font: 400 14.5px/1.6 var(--sans);
  color: var(--ink-55);
  max-width: 38ch;
  text-align: right;
}

/* Buttons ---------------------------------------------------------------- */
.btn {
  --btn-lift: 0;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 26px;
  font: 500 13.5px/1 var(--sans);
  letter-spacing: .01em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transform: translateY(var(--btn-lift));
  transition:
    background-color var(--t-mid) var(--ease),
    border-color     var(--t-mid) var(--ease),
    color            var(--t-mid) var(--ease),
    transform        var(--t-mid) var(--ease),
    box-shadow       var(--t-mid) var(--ease);
}
.btn--solid {
  background: var(--ink);
  color: #fff;
}
.btn--solid:hover,
.btn--solid:focus-visible {
  background: var(--blue);
  --btn-lift: -2px;
  box-shadow: 0 6px 18px rgba(28, 78, 128, .22);
}
.btn--solid:active { --btn-lift: 0; box-shadow: none; }

.btn--outline {
  border-color: var(--rule-field);
  color: var(--ink);
  background: transparent;
}
.btn--outline:hover,
.btn--outline:focus-visible {
  border-color: var(--ink);
  background: var(--surface-alt);
  --btn-lift: -2px;
}
.btn--outline:active { --btn-lift: 0; }

/* --------------------------------------------------------------------------
   4. Utility bar
   -------------------------------------------------------------------------- */
.utility {
  background: var(--ink);
  color: var(--dark-meta);
}
.utility__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--utility-h);
  padding: 0 var(--pad-x);
  font: 400 11.5px/1.5 var(--mono);
  letter-spacing: .02em;
}
.utility__right { display: flex; gap: 26px; align-items: center; }
.utility__dot   { color: #5d6875; }
.utility a {
  color: var(--dark-meta);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.utility a:hover { color: #fff; }

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}
.site-header.is-stuck {
  box-shadow: 0 1px 20px rgba(20, 24, 29, .09);
  background: rgba(255, 255, 255, .96);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 var(--pad-x);
  height: var(--header-h);
  transition: height var(--t-mid) var(--ease);
}
.site-header.is-stuck .site-header__inner { height: 66px; }

.scroll-progress {
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px;
  width: 100%;
  background: var(--blue);
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
  transition: transform 80ms linear;
}

/* Brand ------------------------------------------------------------------ */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}
.brand__mark {
  width: 36px; height: 36px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  font: 700 20px/1 var(--serif);
  transition: background-color var(--t-mid) var(--ease), transform var(--t-mid) var(--ease-out);
}
.brand:hover .brand__mark { background: var(--blue); transform: rotate(-4deg); }
.site-header.is-stuck .brand__mark { width: 32px; height: 32px; font-size: 18px; }

.brand__text { display: flex; flex-direction: column; gap: 3px; }
.brand__name {
  font: 600 13.5px/1 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
}
.brand__sub {
  font: 400 9.5px/1 var(--mono);
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--ink-40);
}

/* Nav -------------------------------------------------------------------- */
.nav {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav__link {
  position: relative;
  font: 500 13px/1 var(--sans);
  color: var(--ink-70);
  text-decoration: none;
  padding-bottom: 4px;
  transition: color var(--t-fast) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--t-mid) var(--ease);
}
.nav__link:hover,
.nav__link:focus-visible,
.nav__link.is-active { color: var(--ink); }
.nav__link:hover::after,
.nav__link:focus-visible::after,
.nav__link.is-active::after { transform: scaleX(1); transform-origin: left center; }
.nav__link.is-active::after { background: var(--blue); }

.nav__cta { padding: 11px 20px; font-size: 12.5px; }

/* Mobile toggle ---------------------------------------------------------- */
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  padding: 0;
  place-items: center;
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}
.nav-toggle:hover { border-color: var(--ink); }
.nav-toggle__bars {
  display: block;
  width: 18px; height: 12px;
  position: relative;
}
.nav-toggle__bars i {
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav-toggle__bars i:nth-child(1) { top: 0; }
.nav-toggle__bars i:nth-child(2) { top: 5px; }
.nav-toggle__bars i:nth-child(3) { top: 10px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; transform: scaleX(.4); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
}
.hero__lead {
  padding: clamp(48px, 5.9vw, 76px) clamp(20px, 3.8vw, 48px) clamp(44px, 5vw, 64px) var(--pad-x);
  border-right: 1px solid var(--rule);
}
.hero__title {
  margin: 0 0 26px;
  font: 400 clamp(2.25rem, 1.2rem + 3.4vw, 3.5rem)/1.1 var(--serif);
  letter-spacing: -.015em;
  max-width: 16ch;
  text-wrap: pretty;
}
.hero__intro {
  margin: 0 0 36px;
  font: 400 17px/1.65 var(--sans);
  color: var(--ink-60);
  max-width: 52ch;
  text-wrap: pretty;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 52px;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
}
.pillar { padding: 20px 22px 0 0; }
.pillar + .pillar { border-left: 1px solid var(--rule-softest); padding-left: 22px; }
.pillar:last-child { padding-right: 0; }
.pillar__num {
  display: block;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .14em;
  color: var(--ink-35);
  margin-bottom: 9px;
}
.pillar__text {
  font: 500 13.5px/1.45 var(--sans);
  color: #242a30;
}

/* Hero aside ------------------------------------------------------------- */
.hero__aside {
  background: var(--surface-alt);
  padding: clamp(48px, 5.9vw, 76px) var(--pad-x) clamp(44px, 5vw, 64px) clamp(20px, 3.8vw, 48px);
}
.index__heading {
  font: 500 11px/1 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-40);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.index { display: flex; flex-direction: column; }
.index__row {
  position: relative;
  display: grid;
  grid-template-columns: 38px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 17px 0;
  border-bottom: 1px solid var(--rule-soft);
  text-decoration: none;
  transition: background-color var(--t-mid) var(--ease), padding-left var(--t-mid) var(--ease);
}
.index__row::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--blue);
  transform: scaleY(0);
  transform-origin: center top;
  transition: transform var(--t-mid) var(--ease);
}
.index__row:hover,
.index__row:focus-visible {
  background: var(--surface-hover);
  padding-left: 12px;
}
.index__row:hover::before,
.index__row:focus-visible::before { transform: scaleY(1); }
.index__num   { font: 400 11px/1 var(--mono); color: var(--ink-30); }
.index__label { font: 400 16px/1.3 var(--serif); color: var(--ink); }
.index__arrow {
  font: 400 12px/1 var(--mono);
  color: var(--blue);
  transition: transform var(--t-mid) var(--ease-out);
}
.index__row:hover .index__arrow,
.index__row:focus-visible .index__arrow { transform: translateX(5px); }

.notice {
  margin-top: 34px;
  border: 1px solid var(--rule);
  background: var(--surface);
  padding: 24px;
  transition: border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.notice:hover {
  border-color: var(--ink-30);
  box-shadow: 0 4px 20px rgba(20, 24, 29, .06);
}
.notice__label {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 12px;
}
.notice__body {
  font: 400 15px/1.55 var(--sans);
  color: var(--ink-70);
}

/* --------------------------------------------------------------------------
   7. Capabilities
   -------------------------------------------------------------------------- */
.caps { border-top: 1px solid var(--rule-strong); }

.cap {
  position: relative;
  z-index: 0; /* contains the ::before wash so it paints above the section background */
  display: grid;
  grid-template-columns: 96px 1.05fr 1fr;
  gap: 36px;
  padding: 34px 0;
  border-bottom: 1px solid var(--rule-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: background-color var(--t-mid) var(--ease);
}
.cap--last { border-bottom-color: var(--rule-strong); }
.cap::before {
  content: "";
  position: absolute;
  left: calc(var(--pad-x) * -1);
  right: calc(var(--pad-x) * -1);
  top: 0; bottom: 0;
  background: var(--surface-alt);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease);
  pointer-events: none;
  z-index: -1;
}
.cap:hover::before,
.cap:target::before { opacity: .7; }

.cap__num {
  font: 400 12px/1 var(--mono);
  color: var(--ink-30);
  padding-top: 6px;
  transition: color var(--t-mid) var(--ease);
}
.cap:hover .cap__num { color: var(--blue); }
.cap__title {
  font: 400 clamp(1.25rem, 1rem + .6vw, 1.5rem)/1.3 var(--serif);
  letter-spacing: -.005em;
}
.cap__body p {
  margin: 0 0 18px;
  font: 400 15px/1.65 var(--sans);
  color: var(--ink-60);
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font: 400 11.5px/1 var(--mono);
  color: var(--ink-70);
  border: 1px solid var(--rule);
  padding: 7px 10px;
  background: var(--surface);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.cap:hover .tag { border-color: var(--rule-field); }
.tag:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-1px); }

/* --------------------------------------------------------------------------
   8. Approach
   -------------------------------------------------------------------------- */
.stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stage {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
  transition: transform var(--t-mid) var(--ease-out);
}
.stage:hover { transform: translateY(-4px); }
.stage__num {
  font: 500 11px/1 var(--mono);
  letter-spacing: .14em;
  color: var(--blue);
  margin-bottom: 14px;
}
.stage__title {
  margin: 0 0 10px;
  font: 600 16px/1.35 var(--sans);
}
.stage__body {
  margin: 0 0 16px;
  font: 400 14px/1.6 var(--sans);
  color: var(--ink-55);
}
.stage__output {
  font: 400 11.5px/1.5 var(--mono);
  color: var(--ink-40);
  border-top: 1px solid var(--rule-soft);
  padding-top: 12px;
}

/* --------------------------------------------------------------------------
   9. Technology
   -------------------------------------------------------------------------- */
.tech {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: clamp(32px, 4.4vw, 56px);
}
.tech__note {
  font: 400 14.5px/1.65 var(--sans);
  color: var(--ink-55);
}
.tech__lead .section__title { margin-bottom: 18px; }

.spec__row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-top: 1px solid var(--rule-soft);
  align-items: baseline;
  transition: background-color var(--t-fast) var(--ease);
}
.spec__row:first-child       { border-top-color: var(--rule-strong); }
.spec__row--last             { border-bottom: 1px solid var(--rule-soft); }
.spec__key {
  font: 500 12px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
}
.spec__val {
  margin: 0;
  font: 400 15px/1.7 var(--sans);
  color: var(--ink-60);
}

/* --------------------------------------------------------------------------
   10. About
   -------------------------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: .62fr 1.38fr;
  gap: clamp(32px, 4.4vw, 56px);
  align-items: start;
}
.portrait-frame {
  aspect-ratio: 4 / 5;
  background: repeating-linear-gradient(135deg, #e2e5e8 0 8px, #eceef0 8px 16px);
  border: 1px solid var(--rule);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  overflow: hidden;
}
.portrait-frame__caption {
  font: 400 11px/1.4 var(--mono);
  color: var(--ink-40);
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 6px 8px;
}
.about__body .section__title { margin-bottom: 22px; max-width: 30ch; }
.about__para {
  margin: 0 0 18px;
  font: 400 16px/1.7 var(--sans);
  color: var(--ink-60);
  max-width: 66ch;
}
.about__para + .about__para { margin-bottom: 32px; }

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
}
.fact { padding: 22px 24px 0 0; }
.fact + .fact { border-left: 1px solid var(--rule-soft); padding-left: 24px; }
.fact:last-child { padding-right: 0; }
.fact__key {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-35);
  margin-bottom: 10px;
}
.fact__val {
  margin: 0;
  font: 400 17px/1.35 var(--serif);
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   11. Contact
   -------------------------------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(36px, 5vw, 64px);
}
.contact__note {
  margin: 0 0 40px;
  font: 400 15px/1.7 var(--sans);
  color: var(--dark-mid);
  max-width: 44ch;
}
.details { border-top: 1px solid var(--dark-rule); }
.details__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--dark-rule);
}
.details__row dt {
  font: 400 11.5px/1.6 var(--mono);
  color: var(--dark-dim);
}
.details__row dd {
  margin: 0;
  font: 400 14px/1.6 var(--sans);
  color: var(--dark-bright);
}
.details__link {
  color: var(--dark-bright);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: left 100%;
  transition: background-size var(--t-mid) var(--ease);
}
.details__link:hover { background-size: 100% 1px; }

/* Form card -------------------------------------------------------------- */
.form-card {
  background: var(--surface);
  color: var(--ink);
  padding: clamp(24px, 2.9vw, 36px);
}
.form-card__label {
  font: 500 11px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-40);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 28px;
}
.form__pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
}
.field__label {
  font: 500 12px/1 var(--sans);
  color: var(--ink-70);
  transition: color var(--t-fast) var(--ease);
}
.field:focus-within .field__label { color: var(--blue); }

.field__input {
  font: 400 14px/1.35 var(--sans);
  padding: 12px 13px;
  border: 1px solid var(--rule-field);
  background: var(--surface);
  color: var(--ink);
  outline: none;
  width: 100%;
  border-radius: 0;
  transition: border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.field__input:hover { border-color: var(--ink-30); }
.field__input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(28, 78, 128, .12);
}
.field__input--area { line-height: 1.6; resize: vertical; min-height: 108px; }

.field__select { position: relative; display: block; }
.field__select select { appearance: none; -webkit-appearance: none; padding-right: 34px; }
.field__select::after {
  content: "";
  position: absolute;
  right: 14px; top: 50%;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--ink-40);
  border-bottom: 1.5px solid var(--ink-40);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
  transition: transform var(--t-mid) var(--ease);
}
.field__select:focus-within::after { transform: translateY(-30%) rotate(225deg); }

.field__error {
  font: 400 11.5px/1.4 var(--mono);
  color: #a5342b;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}
.field.has-error .field__error { max-height: 40px; opacity: 1; }
.field.has-error .field__input { border-color: #a5342b; }

.form > .field { margin-bottom: 20px; }

.form__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  border-top: 1px solid var(--rule-softest);
  padding-top: 22px;
}
.form__legal {
  font: 400 11.5px/1.5 var(--mono);
  color: var(--ink-35);
  max-width: 38ch;
}
.btn--submit { padding: 15px 28px; }

.form__status {
  margin: 16px 0 0;
  font: 400 12.5px/1.5 var(--mono);
  color: var(--blue);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}
.form__status.is-shown { max-height: 80px; opacity: 1; }

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--ink-deep);
  color: var(--dark-dim);
  border-top: 1px solid var(--dark-rule);
}
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 34px var(--pad-x);
  font: 400 11.5px/1.6 var(--mono);
}
.site-footer__links { display: flex; gap: 28px; flex-wrap: wrap; }
.site-footer a {
  color: var(--dark-dim);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.site-footer a:hover { color: #fff; }

/* --------------------------------------------------------------------------
   12b. Secondary pages (privacy, terms, 404)
   -------------------------------------------------------------------------- */
.page {
  padding: clamp(56px, 7vw, 96px) var(--pad-x) clamp(72px, 9vw, 128px);
  max-width: calc(72ch + var(--pad-x) * 2);
}
.page__title {
  margin: 0 0 24px;
  font: 400 clamp(2rem, 1.2rem + 2.4vw, 2.75rem)/1.14 var(--serif);
  letter-spacing: -.015em;
  text-wrap: pretty;
}
.page h2 {
  margin: 40px 0 12px;
  font: 600 16px/1.35 var(--sans);
}
.page p {
  margin: 0 0 16px;
  font: 400 16px/1.75 var(--sans);
  color: var(--ink-60);
}
.page ul {
  margin: 0 0 16px;
  padding-left: 20px;
  list-style: disc;
  font: 400 16px/1.75 var(--sans);
  color: var(--ink-60);
}
.page__meta {
  font: 400 11.5px/1.6 var(--mono) !important;
  color: var(--ink-35) !important;
  letter-spacing: .02em;
  border-top: 1px solid var(--rule);
  padding-top: 18px;
  margin-top: 44px !important;
}
.page__back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font: 500 13px/1 var(--sans);
  color: var(--ink-70);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), gap var(--t-mid) var(--ease);
}
.page__back:hover { color: var(--blue); gap: 16px; }

/* --------------------------------------------------------------------------
   13. Scroll reveal
   -------------------------------------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity   var(--t-slow) var(--ease-out) var(--d, 0ms),
    transform var(--t-slow) var(--ease-out) var(--d, 0ms);
  will-change: opacity, transform;
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* --------------------------------------------------------------------------
   14. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .section__head { flex-direction: column; align-items: flex-start; gap: 20px; }
  .section__aside { text-align: left; max-width: 56ch; }
  .cap { grid-template-columns: 64px 1fr; gap: 20px 24px; }
  .cap__num { grid-row: 1; }
  .cap__title { grid-column: 2; }
  .cap__body { grid-column: 2; }
  .tech { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .about__media { max-width: 320px; }
  .contact { grid-template-columns: 1fr; }
  .stages { grid-template-columns: repeat(2, 1fr); gap: 28px 32px; }
}

@media (max-width: 940px) {
  .hero { grid-template-columns: 1fr; }
  .hero__lead { border-right: 0; border-bottom: 1px solid var(--rule); padding-right: var(--pad-x); }
  .hero__aside { padding-left: var(--pad-x); }
  .hero__title { max-width: 20ch; }

  .nav-toggle { display: grid; }

  /* Secondary pages carry a single button instead of a menu — no panel. */
  .nav--plain { position: static; }

  .nav:not(.nav--plain) {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 14px 30px rgba(20, 24, 29, .1);
    padding: 8px var(--pad-x) 20px;
    clip-path: inset(0 0 100% 0);
    opacity: 0;
    pointer-events: none;
    transition: clip-path 360ms var(--ease-out), opacity 200ms var(--ease);
  }
  .nav.is-open {
    clip-path: inset(0 0 0 0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav:not(.nav--plain) .nav__link {
    padding: 16px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--rule-softest);
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--t-mid) var(--ease) var(--d, 0ms), transform var(--t-mid) var(--ease) var(--d, 0ms), color var(--t-fast) var(--ease);
  }
  .nav:not(.nav--plain) .nav__link::after { display: none; }
  .nav.is-open .nav__link { opacity: 1; transform: none; }

  .nav:not(.nav--plain) .nav__cta {
    margin-top: 16px;
    padding: 15px 20px;
    font-size: 13.5px;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--t-mid) var(--ease) var(--d, 0ms), transform var(--t-mid) var(--ease) var(--d, 0ms), background-color var(--t-mid) var(--ease);
  }
  .nav.is-open .nav__cta { opacity: 1; transform: none; }

  /* Stagger the panel items as it opens */
  .nav:not(.nav--plain) > *:nth-child(1) { --d: 40ms; }
  .nav:not(.nav--plain) > *:nth-child(2) { --d: 80ms; }
  .nav:not(.nav--plain) > *:nth-child(3) { --d: 120ms; }
  .nav:not(.nav--plain) > *:nth-child(4) { --d: 160ms; }
  .nav:not(.nav--plain) > *:nth-child(5) { --d: 200ms; }
}

@media (max-width: 760px) {
  .utility__inner { flex-direction: column; align-items: flex-start; gap: 4px; padding-top: 8px; padding-bottom: 8px; }
  .utility__right { gap: 12px; }
  .spec__row { grid-template-columns: 1fr; gap: 8px; }
  .form__pair { grid-template-columns: 1fr; }
  .details__row { grid-template-columns: 88px 1fr; gap: 12px; }
}

@media (max-width: 620px) {
  :root { --header-h: 70px; }
  .stages { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; border-top: 0; }
  .pillar { border-top: 1px solid var(--rule); padding: 18px 0 0; }
  .pillar + .pillar { border-left: 0; padding-left: 0; }
  .facts { grid-template-columns: 1fr; border-top: 0; }
  .fact { border-top: 1px solid var(--rule); padding: 18px 0 0; }
  .fact + .fact { border-left: 0; padding-left: 0; }
  .brand__sub { display: none; }
  .hero__actions .btn { flex: 1 1 100%; }
  .form__foot { flex-direction: column; align-items: stretch; }
  .btn--submit { width: 100%; }
  .utility__right span:last-child { display: none; }
}

@media (max-width: 420px) {
  .cap { grid-template-columns: 1fr; }
  .cap__num { padding-top: 0; }
  .cap__title, .cap__body { grid-column: 1; }
}

/* --------------------------------------------------------------------------
   15. Motion preferences / print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .eyebrow__rule { transform: scaleX(1); }
}

@media print {
  .utility, .site-header, .nav-toggle, .form-card, .skip-link { display: none !important; }
  .js .reveal { opacity: 1 !important; transform: none !important; }
  body { color: #000; }
  .section--contact { background: #fff; color: #000; }
}