/* Praxon marketing site — praxonops.com
   Implementation of the approved "Industrial Precision" redesign.
   Mobile-first; the desktop composition from the design export takes over at 900px.
   Color and type values are taken verbatim from the design handoff. */

/* ---------------------------------------------------------------- tokens -- */
:root {
  /* dark surfaces */
  --bg: #07090C;
  --bg-alt: #090C11;
  --panel: #0C1017;
  --panel-2: #0A0E14;
  --chrome: #11161E;
  --cta-bg: #0A1128;

  /* dark type */
  --ink: #E8ECF2;
  --ink-hi: #ffffff;
  --ink-2: #A7B2C0;
  --ink-3: #8E9AAA;
  --ink-4: #AEB8C6;
  /* Muted greys. The design export specified darker values (#6E7A8A / #5D6875 /
     #4E5866), but at 10-12px they land between 2.7:1 and 3.5:1 on these
     backgrounds, below WCAG AA. Lifted to the lightest values that still hold a
     visible three-step hierarchy and clear 4.5:1 on the lightest dark surface
     each one is used against. */
  --dim: #8792A1;
  --dim-2: #7E8896;
  --dim-3: #76808D;
  --dim-4: #7E8B9C;
  --dim-5: #8B95A3;
  --slate: #5F6C7E;

  /* light surfaces */
  --paper: #F2F4F7;
  --paper-2: #F5F7FA;
  --white: #ffffff;
  --l-ink: #0A0C10;
  --l-ink-2: #1B222C;
  --l-ink-3: #39414D;
  --l-mute: #525C6B;
  --l-mute-2: #5A6472;
  /* Same correction on the light surfaces: #7B8593 / #8A94A2 / #9AA3AF read
     between 2.5:1 and 3.7:1 on #F2F4F7. */
  --l-mute-3: #646D7A;
  --l-mute-4: #5F6875;
  --l-mute-5: #656E7A;
  --l-mute-6: #676E76;
  --l-line: #DDE2E9;
  --l-line-2: #E1E5EB;
  --l-line-3: #E4E8ED;

  /* accent */
  --blue: #1950E2;
  --blue-hover: #2E63F0;
  --blue-lite: #3B72FF;
  --blue-hi: #6E9EFF;
  --blue-link: #7AA0FF;
  --amber: #FFB020;
  --amber-ink: #9A6A17;
  --red: #FF5A47;

  /* lines */
  --hair: rgba(255, 255, 255, .08);
  --hair-2: rgba(255, 255, 255, .12);

  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: Archivo, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --wrap: 1240px;
  --pad: 20px;
  --radius: 12px;
}

@media (min-width: 900px) { :root { --pad: 32px; } }

/* ------------------------------------------------------------------ base -- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, canvas { max-width: 100%; }
img { height: auto; display: block; }

a { color: var(--blue-lite); text-decoration: none; }
a:hover { color: var(--blue-link); }

/* --blue-lite is tuned for the dark surfaces; on paper it only reaches 4.17:1,
   so inline links inside light sections step down to the deeper blue. */
.section--light a:not(.btn), .section--white a:not(.btn),
body.page-light main a:not(.btn) { color: var(--blue); }
.section--light a:not(.btn):hover, .section--white a:not(.btn):hover,
body.page-light main a:not(.btn):hover { color: var(--blue-hover); }

h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.03em; line-height: 1.06; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }

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

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--blue); color: #fff; padding: 12px 18px;
  font-size: 15px; font-weight: 600; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; color: #fff; }

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

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

/* --------------------------------------------------------------- eyebrow -- */
.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--dim-2);
  margin: 0 0 16px;
  text-transform: uppercase;
}
.eyebrow--light { color: var(--l-mute-4); }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .13em;
  border-radius: 999px;
  padding: 6px 12px;
  white-space: nowrap;
}
.badge--dev { color: var(--amber); border: 1px solid rgba(255, 176, 32, .45); }
.badge--dev-light { color: var(--amber-ink); border: 1px solid rgba(162, 112, 26, .32); }

/* --------------------------------------------------------------- buttons -- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--sans);
  font-size: 16px; font-weight: 600;
  padding: 15px 24px;
  border-radius: 7px;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background-color .2s, border-color .2s, color .2s;
}
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-hover); color: #fff; }
.btn--ghost { border-color: rgba(255, 255, 255, .18); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: rgba(255, 255, 255, .45); color: var(--ink); }
.btn--dark { background: var(--l-ink); color: #fff; }
.btn--dark:hover { background: var(--blue); color: #fff; }
.btn--outline-light { border-color: var(--l-line); color: var(--l-ink); background: transparent; }
.btn--outline-light:hover { border-color: var(--l-ink); color: var(--l-ink); }
.btn--block { display: flex; width: 100%; }

.play-tri {
  width: 0; height: 0;
  border-left: 8px solid var(--blue-lite);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* ---------------------------------------------------------------- header -- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 9, 12, .88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hair);
}
.site-header__bar {
  max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad);
  height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.wordmark { display: flex; align-items: center; }
.wordmark img { height: 17px; width: auto; filter: brightness(1.45) saturate(1.05); }

.nav-desktop { display: none; }
.nav-desktop a { color: var(--ink-4); font-size: 14.5px; font-weight: 500; }
.nav-desktop a:hover { color: #fff; }
.nav-desktop .nav-rule { width: 1px; height: 20px; background: var(--hair-2); }
.nav-desktop .nav-signin { color: var(--dim-5); font-size: 13.5px; font-family: var(--mono); }
.nav-desktop .nav-signin:hover { color: #fff; }

.header-actions { display: flex; align-items: center; gap: 14px; }
.header-actions .btn { font-size: 13px; padding: 9px 14px; border-radius: 6px; }

.menu-toggle {
  display: flex; flex-direction: column; justify-content: center; gap: 4px;
  width: 34px; height: 34px; padding: 8px 8px;
  background: none; border: 0; cursor: pointer;
}
.menu-toggle span { display: block; width: 18px; height: 1.5px; background: #C6CEDA; transition: transform .22s, opacity .22s; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(2.75px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-2.75px) rotate(-45deg); }

/* mobile menu panel */
.menu-panel {
  position: fixed; inset: 58px 0 0; z-index: 49;
  background: var(--bg);
  padding-bottom: 30px;
  overflow-y: auto;
  opacity: 0; pointer-events: none;
  /* visibility (not just opacity) so the closed panel leaves the tab order:
     an aria-hidden container must not hold focusable links. */
  visibility: hidden;
  transition: opacity .22s ease, visibility 0s linear .22s;
}
.menu-panel[data-open="true"] {
  opacity: 1; pointer-events: auto; visibility: visible;
  transition: opacity .22s ease, visibility 0s linear 0s;
}
.menu-panel__head {
  padding: 22px var(--pad) 26px;
  border-bottom: 1px solid var(--hair);
  display: flex; align-items: center; justify-content: space-between;
}
.menu-panel__head span {
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--dim-2);
}
.menu-close {
  background: none; border: 0; cursor: pointer;
  font-size: 26px; line-height: 1; color: #C6CEDA; padding: 4px 8px;
}
.menu-list { display: flex; flex-direction: column; }
.menu-list a {
  font-size: 26px; font-weight: 600; letter-spacing: -.02em; color: #fff;
  padding: 20px var(--pad); border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.menu-list a.menu-signin {
  font-family: var(--mono); font-size: 13px; font-weight: 400;
  letter-spacing: .1em; color: var(--dim-5); border-bottom: 0;
}
/* width:auto, not the .btn--block width:100%: this button carries horizontal
   margins, and an explicit 100% makes it overhang the viewport by 2 x --pad.
   display:flex keeps it block-level, so auto fills the gutter exactly. */
.menu-panel .btn { margin: 6px var(--pad) 0; width: auto; }

body[data-menu-open="true"] { overflow: hidden; }

@media (min-width: 900px) {
  .site-header__bar { height: 72px; }
  .wordmark img { height: 20px; }
  .nav-desktop { display: flex; align-items: center; gap: 34px; }
  .header-actions .btn { font-size: 14.5px; padding: 11px 20px; }
  .menu-toggle, .menu-panel { display: none; }
}

/* ------------------------------------------------------------------ hero -- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--hair); }
.grid-overlay {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 44px 44px;
}
.hero__glow {
  position: absolute; top: -160px; left: 20%;
  width: 420px; height: 360px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(25, 80, 226, .34), transparent 64%);
}
.hero__inner { position: relative; padding: 44px var(--pad) 40px; max-width: var(--wrap); margin: 0 auto; }

.hero__kicker { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.hero__kicker img { width: 12px; height: 12px; filter: brightness(1.5); }
.hero__kicker span {
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--dim-4);
}
.hero__kicker .kicker-rule { display: none; width: 16px; height: 1px; background: rgba(255, 255, 255, .2); }

.hero h1 { font-size: clamp(34px, 8.6vw, 37px); color: #fff; line-height: 1.04; }
.hero h1 .muted { color: var(--slate); }
.hero__lede { margin-top: 18px; font-size: 15.5px; line-height: 1.55; color: var(--ink-2); }
.hero__cta { display: flex; flex-direction: column; gap: 10px; margin-top: 26px; }
.hero__cta .btn { width: 100%; }

.hero__note {
  margin-top: 14px; display: flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .08em; color: var(--dim);
  line-height: 1.5;
}

.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--blue-lite); flex: none; animation: pulseDot 2.4s ease-in-out infinite; }
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.82); } }
@keyframes ring { 0% { transform: scale(.7); opacity: .9; } 100% { transform: scale(2.2); opacity: 0; } }
@keyframes drift { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* browser-chrome framed screenshot */
.frame {
  position: relative;
  border: 1px solid var(--hair-2);
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel);
}
.frame__bar {
  height: 28px; background: var(--chrome);
  border-bottom: 1px solid var(--hair);
  display: flex; align-items: center; gap: 7px; padding: 0 11px;
  font-family: var(--mono); font-size: 9.5px; color: var(--dim-2);
}
.frame__dots { display: none; gap: 7px; }
.frame__dots i { width: 9px; height: 9px; border-radius: 50%; background: #2A323D; display: block; }
.frame__url { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.frame img { width: 100%; }

.hero__shot { margin-top: 30px; }

.hero__float { display: none; }

@media (min-width: 900px) {
  .grid-overlay { background-size: 64px 64px; }
  .hero__glow { top: -260px; left: 52%; width: 900px; height: 620px; background: radial-gradient(ellipse at center, rgba(25, 80, 226, .30), transparent 62%); }
  .hero__inner {
    padding: 96px var(--pad) 88px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  }
  .hero__kicker { gap: 10px; margin-bottom: 28px; }
  .hero__kicker img { width: 14px; height: 14px; }
  .hero__kicker span { font-size: 12px; }
  .hero__kicker .kicker-rule { display: block; }
  .hero h1 { font-size: clamp(44px, 4.6vw, 66px); line-height: 1.02; letter-spacing: -.032em; }
  .hero__lede { margin-top: 28px; font-size: 19px; max-width: 560px; }
  .hero__cta { flex-direction: row; gap: 14px; margin-top: 40px; }
  .hero__cta .btn { width: auto; font-size: 16px; padding: 16px 28px; }
  .hero__note { margin-top: 44px; font-size: 12px; }
  .hero__media { position: relative; }
  .hero__shot { margin-top: 0; }
  .hero__shot .frame { border-radius: 12px; box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(25, 80, 226, .10); }
  .frame__bar { height: 34px; font-size: 11px; padding: 0 13px; }
  .frame__dots { display: flex; }
  .frame__url { margin-left: 7px; }

  .hero__float {
    display: block; position: absolute; z-index: 2;
    background: rgba(12, 16, 23, .94);
    border: 1px solid rgba(255, 255, 255, .13);
    border-radius: 8px; padding: 12px 15px;
    -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
    animation: drift 7s ease-in-out infinite;
  }
  .hero__float dt { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--dim); margin-bottom: 5px; }
  .hero__float dd { margin: 0; display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: #fff; }
  .hero__float--status { left: -34px; top: 64px; }
  .hero__float--crew { right: -28px; bottom: 112px; animation-delay: .9s; }
  .hero__float--notified {
    right: 34px; top: -38px; background: var(--blue); color: #fff;
    border-color: transparent; box-shadow: 0 16px 40px -12px rgba(25, 80, 226, .8); animation: none;
  }
  .hero__float--notified dt { color: rgba(255, 255, 255, .75); }
  .swatch { width: 9px; height: 9px; border-radius: 2px; background: var(--red); flex: none; }
  .live-dot { position: relative; width: 9px; height: 9px; flex: none; }
  .live-dot i { position: absolute; inset: 0; border-radius: 50%; background: var(--blue-lite); }
  .live-dot i:last-child { background: none; border: 1px solid var(--blue-lite); animation: ring 2.2s ease-out infinite; }
}

@media (prefers-reduced-motion: reduce) {
  .pulse-dot, .hero__float, .live-dot i:last-child { animation: none !important; }
}

/* -------------------------------------------------------- capability bar -- */
.capbar { border-bottom: 1px solid var(--hair); background: var(--bg-alt); }
.capbar__inner { max-width: var(--wrap); margin: 0 auto; padding: 22px var(--pad); }
.capbar__label { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--dim-2); margin-bottom: 14px; }
.capbar ul { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; }
.capbar li {
  font-size: 13px; font-weight: 600; color: #C6CEDA;
  padding: 7px 12px; border: 1px solid rgba(255, 255, 255, .10); border-radius: 999px;
}
@media (min-width: 900px) {
  .capbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 26px var(--pad); }
  .capbar__label { font-size: 11.5px; margin-bottom: 0; white-space: nowrap; }
  .capbar ul { gap: 8px; justify-content: flex-end; flex: 1; }
  .capbar li { font-size: 14px; padding: 8px 15px; }
}

/* --------------------------------------------------------------- section -- */
.section { padding: 64px 0 68px; }
.section--dark { background: var(--bg); }
.section--light { background: var(--paper); color: var(--l-ink); }
.section--white { background: var(--white); color: var(--l-ink); }
.section--rule { border-bottom: 1px solid var(--hair); }

.section h1, .section h2 { font-size: clamp(30px, 7vw, 34px); }
.section--dark h1, .section--dark h2 { color: #fff; }
.section__lede { margin-top: 16px; font-size: 16px; line-height: 1.6; color: var(--ink-3); }
.section--light .section__lede, .section--white .section__lede { color: var(--l-mute); }

@media (min-width: 900px) {
  .section { padding: 104px 0 112px; }
  .section h1, .section h2 { font-size: 52px; line-height: 1.05; }
  .section__lede { font-size: 18px; max-width: 620px; }
}

/* ------------------------------------------------------------------ film -- */
.film__head { margin-bottom: 26px; }
.film__head p { margin-top: 14px; font-size: 15.5px; line-height: 1.6; color: var(--ink-3); }
.film__stage { position: relative; border: 1px solid var(--hair-2); border-radius: 14px; overflow: hidden; background: var(--panel); }
product-film { display: block; position: relative; overflow: hidden; background: var(--bg); width: 100%; aspect-ratio: 16 / 9; }
.film__meta {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 16px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: var(--dim-2);
}
.film__meta .chapter { color: var(--blue-hi); }
.film__transcript { margin-top: 22px; border-top: 1px solid rgba(255, 255, 255, .09); padding-top: 18px; }
.film__transcript summary {
  cursor: pointer; list-style: none;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; color: var(--ink-3);
}
.film__transcript summary::-webkit-details-marker { display: none; }
.film__transcript summary::after { content: ' +'; }
.film__transcript[open] summary::after { content: ' –'; }
.film__transcript ol {
  list-style: none; margin: 20px 0 0; padding: 0;
  display: grid; gap: 18px; font-size: 14.5px; line-height: 1.6; color: var(--ink-3);
}
.film__transcript time { font-family: var(--mono); color: var(--dim-2); margin-right: 6px; }

@media (min-width: 900px) {
  .film__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 38px; }
  .film__head h2 { font-size: 46px; }
  .film__head p { margin-top: 0; font-size: 16.5px; max-width: 400px; }
  .film__meta { font-size: 11.5px; letter-spacing: .12em; }
  .film__transcript ol { grid-template-columns: 1fr 1fr; gap: 22px 40px; }
}

/* --------------------------------------------------------------- problem -- */
.problem__cards { display: grid; gap: 16px; margin-top: 40px; }
.pcard { background: var(--white); border: 1px solid var(--l-line-2); border-radius: var(--radius); padding: 28px 24px; }
.pcard__label { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--l-mute-5); margin-bottom: 20px; }
.pcard__lead { font-size: 21px; line-height: 1.3; font-weight: 600; letter-spacing: -.015em; margin-bottom: 14px; }
.pcard__body { font-size: 15.5px; line-height: 1.6; color: var(--l-mute-2); }
.pcard--dark { background: var(--l-ink); border-color: var(--l-ink); color: #fff; }
.pcard--dark .pcard__label { color: var(--dim-4); }
.pcard--dark .pcard__body { color: #9AA5B4; }

.problem__list { display: grid; gap: 20px; margin-top: 24px; }
.problem__list div { border-top: 2px solid var(--l-ink); padding-top: 16px; }
.problem__list dt { font-size: 15px; font-weight: 600; }
.problem__list dd { margin: 6px 0 0; font-size: 14.5px; color: var(--l-mute-3); line-height: 1.55; }

@media (min-width: 760px) {
  .problem__cards { grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
  .pcard { padding: 32px 28px 30px; }
  .pcard__lead { font-size: 23px; margin-bottom: 16px; }
  .problem__list { grid-template-columns: repeat(4, 1fr); gap: 24px; }
}

/* ------------------------------------------------------------ walkthrough -- */
.walk { margin-top: 40px; }
.walk__tabs {
  display: flex; gap: 6px; margin-bottom: 18px;
  overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none;
  padding-bottom: 2px;
}
.walk__tabs::-webkit-scrollbar { display: none; }
.walk__tab {
  flex: 1 0 auto; min-width: 46px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .06em;
  padding: 9px 12px; border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, .10);
  background: transparent; color: var(--ink-3);
  cursor: pointer; transition: background-color .2s, border-color .2s, color .2s;
}
.walk__tab[aria-selected="true"] { background: var(--blue); border-color: rgba(59, 114, 255, .4); color: #fff; }

.walk__copy { margin-bottom: 18px; }
.walk__copy h3 { font-size: 19px; font-weight: 600; letter-spacing: -.01em; color: #fff; margin-bottom: 8px; }
.walk__copy p { font-size: 15px; line-height: 1.55; color: var(--ink-3); }

.walk__rail { display: none; }
/* Fixed box + contain: switching between screenshots of different aspect
   ratios must not move the page underneath it. */
.walk__panel .frame__view { aspect-ratio: 16 / 11; background: var(--paper-2); }
.walk__panel img { width: 100%; height: 100%; object-fit: contain; object-position: top center; background: var(--paper-2); }
.walk__panel img[hidden] { display: none; }

/* pointer-follow reticle over the hero screenshot */
.hero__reticle {
  position: absolute; left: 0; top: 0; width: 52px; height: 52px;
  pointer-events: none; opacity: 0; transition: opacity .25s; z-index: 3;
}
.hero__reticle img { width: 100%; height: 100%; opacity: .5; }

@media (min-width: 1000px) {
  .walk { display: grid; grid-template-columns: 330px 1fr; gap: 44px; align-items: start; margin-top: 52px; }
  .walk__tabs, .walk__copy { display: none; }
  .walk__rail { display: flex; flex-direction: column; gap: 2px; }
  .walk__step {
    display: block; width: 100%; text-align: left;
    cursor: pointer; padding: 20px 22px; border-radius: 10px;
    border: 1px solid transparent; background: transparent;
    font-family: inherit;
    transition: background-color .2s, border-color .2s;
  }
  .walk__step[aria-selected="true"] { border-color: rgba(59, 114, 255, .35); background: rgba(25, 80, 226, .10); }
  .walk__step-inner { display: flex; align-items: baseline; gap: 14px; }
  .walk__num { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; color: var(--dim-2); }
  .walk__step[aria-selected="true"] .walk__num { color: var(--blue); }
  .walk__title { font-size: 16.5px; font-weight: 600; letter-spacing: -.01em; color: #B7C0CC; }
  .walk__step[aria-selected="true"] .walk__title { color: #fff; }
  .walk__body { font-size: 14.5px; line-height: 1.55; color: var(--ink-3); margin-top: 6px; max-width: 250px; }
  .walk__panel .frame { border-radius: 12px; box-shadow: 0 40px 90px -34px rgba(0, 0, 0, .9); }
}

/* --------------------------------------------------------------- fieldcad -- */
.fc__head { display: grid; gap: 32px; margin-bottom: 40px; }
.fc__stats { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
.fc__stats div div:first-child { font-size: 26px; font-weight: 700; letter-spacing: -.02em; }
.fc__stats div div:last-child { font-family: var(--mono); font-size: 12px; color: var(--l-mute-4); margin-top: 4px; }
.fc__shot { position: relative; }
.fc__shot .shot-box { border: 1px solid var(--l-line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 30px 70px -30px rgba(10, 12, 16, .35); }
.fc__tag {
  margin-top: 16px; background: var(--l-ink); color: #fff; border-radius: 10px; padding: 16px 20px;
}
.fc__tag div:first-child { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--dim-4); margin-bottom: 8px; }
.fc__tag div:last-child { font-size: 15px; line-height: 1.5; }

.fc__notes { display: grid; gap: 20px; margin-top: 24px; }
.fc__notes dt { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.fc__notes dd { margin: 0; font-size: 15px; line-height: 1.6; color: var(--l-mute-3); }

.fc__cad { border: 1px solid var(--l-line); border-radius: 14px; overflow: hidden; background: var(--paper-2); }

@media (min-width: 900px) {
  .fc__head { grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 56px; }
  .fc__head h2 { font-size: 48px; line-height: 1.06; }
  .fc__stats { gap: 36px; margin-top: 34px; }
  .fc__stats div div:first-child { font-size: 30px; }
  .fc__tag { position: absolute; left: -26px; bottom: -26px; margin-top: 0; max-width: 250px; box-shadow: 0 24px 60px -20px rgba(10, 12, 16, .6); }
  .fc__notes { grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 28px; }
}

/* ----------------------------------------------------------- measure link -- */
.measure {
  display: grid; gap: 32px;
  padding: 40px 0 44px; margin-bottom: 40px;
  border-top: 1px solid var(--l-line-3); border-bottom: 1px solid var(--l-line-3);
}
.measure__badges { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.measure__badges .ctx { font-family: var(--mono); font-size: 11px; letter-spacing: .13em; color: var(--l-mute-4); }
.measure h3 { font-size: clamp(26px, 6vw, 38px); line-height: 1.1; margin-bottom: 18px; }
.measure p { font-size: 16.5px; line-height: 1.6; color: var(--l-mute); margin-bottom: 18px; }
.measure__pair { display: grid; gap: 20px; }
.measure__pair dt { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.measure__pair dd { margin: 0; font-size: 15px; line-height: 1.6; color: var(--l-mute-3); }
measure-link { display: block; }

@media (min-width: 1000px) {
  .measure { grid-template-columns: 1fr 480px; gap: 64px; align-items: center; padding: 52px 0 56px; margin-bottom: 52px; }
  .measure__pair { grid-template-columns: 1fr 1fr; gap: 28px; }
  .measure p { font-size: 17.5px; }
}

/* ----------------------------------------------------------------- lidar -- */
.lidar { position: relative; overflow: hidden; }
.lidar__inner { position: relative; }
.lidar__badges { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.lidar__badges .ctx { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--dim-2); }
.lidar__head { display: grid; gap: 24px; margin-bottom: 32px; }
.lidar__head p { font-size: 16px; line-height: 1.6; color: var(--ink-3); }
.lidar__head .concept { font-size: 14px; color: var(--amber); margin-top: 14px; }

.lidar__viewer { border: 1px solid var(--hair-2); border-radius: 14px; overflow: hidden; background: var(--panel-2); }
.lidar__viewer-bar {
  min-height: 38px; border-bottom: 1px solid var(--hair);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 10px 14px;
  font-family: var(--mono); font-size: 10px; color: var(--dim-2);
}
.lidar__viewer-bar .stage { letter-spacing: .12em; color: var(--blue-hi); }
lidar-scene { display: block; height: 300px; background: var(--panel-2); }
.lidar__caption {
  border-top: 1px solid var(--hair); padding: 14px;
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}
.lidar__caption .cap { font-size: 14.5px; color: var(--ink-2); }
.lidar__caption .disclaimer { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--dim-3); }

.lidar__steps {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  margin-top: 24px; border-top: 1px solid rgba(255, 255, 255, .10);
  list-style: none; padding: 0;
}
.lidar__steps li {
  padding: 14px 12px; border-top: 2px solid transparent; color: var(--ink-3);
  transition: color .2s, border-color .2s;
}
.lidar__steps li[data-on="true"] { border-top-color: var(--blue-lite); color: #fff; }
.lidar__steps .n { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--dim-3); margin-bottom: 6px; }
.lidar__steps .t { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; line-height: 1.5; color: inherit; }

.lidar__foot { display: grid; gap: 28px; margin-top: 40px; }
.lidar__foot p { font-size: 16px; line-height: 1.6; color: var(--ink-3); }
.lidar__pull { border-left: 2px solid var(--blue); padding-left: 20px; }
.lidar__pull p { font-size: 21px; line-height: 1.35; font-weight: 600; letter-spacing: -.015em; color: #fff; }

@media (min-width: 760px) {
  .lidar__steps { grid-template-columns: repeat(6, 1fr); }
  .lidar__steps li { padding: 16px 18px; border-left: 1px solid var(--hair); }
  .lidar__steps li:first-child { padding-left: 0; border-left: 0; }
  .lidar__steps li:last-child { padding-right: 0; }
}
@media (min-width: 900px) {
  .lidar__badges .ctx { font-size: 11.5px; }
  .lidar__head { grid-template-columns: 1fr 470px; gap: 56px; align-items: end; margin-bottom: 40px; }
  .lidar__head p { font-size: 17px; }
  lidar-scene { height: 520px; }
  .lidar__viewer-bar { font-size: 11px; padding: 0 16px; flex-wrap: nowrap; }
  .lidar__caption { padding: 16px 18px; flex-wrap: nowrap; }
  .lidar__caption .disclaimer { white-space: nowrap; font-size: 11px; }
  .lidar__foot { grid-template-columns: 1.15fr 1fr; gap: 56px; margin-top: 52px; align-items: start; }
  .lidar__foot p { font-size: 17px; }
  .lidar__pull { padding-left: 22px; }
  .lidar__pull p { font-size: 24px; }
}

/* ------------------------------------------------------------- solutions -- */
.flow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 32px 0; }
.flow span {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em;
  background: var(--white); border: 1px solid var(--l-line); padding: 8px 13px; border-radius: 999px;
}
.flow .is-first { background: var(--l-ink); color: #fff; border-color: var(--l-ink); }
.flow .is-last { background: var(--blue); color: #fff; border-color: var(--blue); }
.flow .arrow { background: none; border: 0; color: var(--l-mute-6); padding: 0; font-size: 14px; }

.trades { display: grid; gap: 20px; }
.trade {
  background: var(--white); border: 1px solid var(--l-line-2); border-radius: var(--radius);
  padding: 30px 26px; display: flex; flex-direction: column; justify-content: space-between; gap: 22px;
}
.trade--founding { background: var(--l-ink); color: #fff; border-color: var(--l-ink); }
.trade__label { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--l-mute-5); margin-bottom: 18px; }
.trade--founding .trade__label { color: var(--dim-4); }
.trade h3 { font-size: 30px; font-weight: 700; letter-spacing: -.02em; margin-bottom: 14px; }
.trade p { font-size: 15.5px; line-height: 1.6; color: var(--l-mute-2); }
.trade--founding p { color: #9AA5B4; }
.trade__foot { font-family: var(--mono); font-size: 12px; color: var(--l-mute-6); }
.trade--founding .trade__foot { color: var(--dim); }

@media (min-width: 760px) {
  .flow { gap: 10px; margin: 40px 0 44px; }
  .flow span { font-size: 12.5px; padding: 9px 16px; }
  .trades { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .trade { padding: 34px 30px 32px; min-height: 300px; }
  .trade h3 { font-size: 32px; }
}

/* --------------------------------------------------------------- founder -- */
.founder { display: grid; gap: 40px; }
.founder__media { position: relative; max-width: 420px; }
.founder__photo {
  position: relative; width: 100%; aspect-ratio: 4 / 5;
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--hair-2);
}
.founder__photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 22%; }
.founder__chip {
  position: absolute; right: -12px; bottom: -20px;
  background: var(--blue); color: #fff; border-radius: 10px; padding: 14px 18px;
}
.founder__chip div:first-child { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; opacity: .8; margin-bottom: 4px; }
.founder__chip div:last-child { font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.founder h2 { font-size: clamp(30px, 7vw, 46px); color: #fff; margin-bottom: 20px; }
.founder p { font-size: 16.5px; line-height: 1.6; color: var(--ink-2); max-width: 640px; }
.founder p + p { margin-top: 16px; }
.founder__stats {
  display: grid; gap: 22px; margin-top: 32px; padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .10);
}
.founder__stats dt { font-size: 22px; font-weight: 700; color: #fff; }
.founder__stats dd { margin: 6px 0 0; font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; color: var(--dim); }

@media (min-width: 900px) {
  .founder { grid-template-columns: 420px 1fr; gap: 64px; align-items: center; }
  .founder__chip { right: -20px; }
  .founder p { font-size: 18px; }
  .founder p + p { margin-top: 18px; }
  .founder__stats { display: flex; gap: 48px; margin-top: 38px; padding-top: 28px; }
  .founder__stats dt { font-size: 26px; }
}

/* -------------------------------------------------------------- insights -- */
.insight { display: grid; gap: 40px; align-items: center; }
.insight h2 { font-size: clamp(30px, 7vw, 46px); margin-bottom: 18px; }
.insight__lede { font-size: 17px; line-height: 1.6; color: var(--l-mute); max-width: 560px; margin-bottom: 24px; }
.insight__meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 26px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; color: var(--l-mute-4);
}
.insight__meta i { width: 4px; height: 4px; border-radius: 50%; background: #C3C9D2; display: block; }
.insight__link {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 16.5px; font-weight: 600; color: var(--l-ink);
  border-bottom: 2px solid var(--blue); padding-bottom: 6px;
}
.insight__link:hover { color: var(--blue); }

.paper-cover {
  background: var(--white); border: 1px solid var(--l-line); border-radius: 4px;
  padding: 34px 28px 28px; box-shadow: 0 34px 70px -30px rgba(10, 12, 16, .4);
  aspect-ratio: 8.5 / 11; display: flex; flex-direction: column; justify-content: space-between;
  max-width: 420px; color: var(--l-ink);
}
.paper-cover__no { font-family: var(--mono); font-size: 10px; letter-spacing: .34em; color: var(--l-mute-4); margin-bottom: 32px; }
.paper-cover__title { font-size: clamp(23px, 5.6vw, 31px); line-height: 1.14; font-weight: 700; letter-spacing: -.025em; margin-bottom: 16px; }
.paper-cover__sub { font-size: 14px; line-height: 1.55; color: var(--l-mute-2); }
.paper-cover__rule { height: 1px; background: var(--l-line-3); margin-bottom: 16px; }
.paper-cover__author { font-size: 14.5px; font-weight: 600; margin-bottom: 4px; }
.paper-cover__date { font-size: 13.5px; color: var(--l-mute-4); margin-bottom: 14px; }
.paper-cover__draft { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--l-mute-6); }

@media (min-width: 900px) {
  .insight { grid-template-columns: 1fr 420px; gap: 72px; }
  .insight__lede { font-size: 18px; }
  .insight__meta { gap: 22px; font-size: 12px; }
  .paper-cover { padding: 44px 38px 38px; }
  .paper-cover__no { margin-bottom: 44px; letter-spacing: .34em; }
}

/* ------------------------------------------------------------------- cta -- */
.cta { position: relative; overflow: hidden; background: var(--cta-bg); padding: 72px 0 76px; }
.cta .grid-overlay { background-image: linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px); }
.cta__glow {
  position: absolute; left: 50%; top: -180px; width: 900px; height: 560px; margin-left: -450px;
  background: radial-gradient(ellipse at center, rgba(25, 80, 226, .42), transparent 65%); pointer-events: none;
}
.cta__inner { position: relative; max-width: 1000px; margin: 0 auto; padding: 0 var(--pad); text-align: center; }
.cta__reticle { width: 30px; height: 30px; margin: 0 auto 26px; filter: brightness(1.6); }
.cta h2 { font-size: clamp(30px, 7.4vw, 56px); color: #fff; margin-bottom: 20px; }
.cta__lede { font-size: 17px; line-height: 1.6; color: var(--ink-2); max-width: 560px; margin: 0 auto 34px; }

@media (min-width: 900px) {
  .cta { padding: 120px 0 124px; }
  .cta__reticle { width: 34px; height: 34px; margin-bottom: 30px; }
  .cta h2 { margin-bottom: 24px; }
  .cta__lede { font-size: 18.5px; margin-bottom: 42px; }
}

/* ------------------------------------------------------------------ form -- */
.access {
  position: relative; max-width: 680px; margin: 0 auto; text-align: left;
  background: rgba(7, 9, 12, .55);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 14px;
  padding: 28px 22px 26px;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.access__head { text-align: center; margin-bottom: 24px; }
.access__head h3 { font-size: 21px; color: #fff; letter-spacing: -.02em; }
.access__head p { margin-top: 10px; font-size: 14.5px; line-height: 1.6; color: var(--ink-3); }
.access__grid { display: grid; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--dim-5); }
.field label .req { color: var(--blue-hi); }
.field input, .field select, .field textarea {
  font-family: var(--sans); font-size: 15.5px; color: var(--ink);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 8px; padding: 13px 14px; width: 100%;
  transition: border-color .18s, background-color .18s;
}
.field textarea { min-height: 92px; resize: vertical; line-height: 1.55; }
.field select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%238B95A3' stroke-width='1.6' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 38px;
}
.field select option { background: var(--panel); color: var(--ink); }
.field input:hover, .field select:hover, .field textarea:hover { border-color: rgba(255, 255, 255, .26); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--blue-lite); background: rgba(255, 255, 255, .06); outline: none;
}
.field input::placeholder, .field textarea::placeholder { color: #67717F; }
.field--wide { grid-column: 1 / -1; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.access__submit { margin-top: 22px; }
.access__fine {
  margin-top: 14px; text-align: center;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--dim-3); line-height: 1.7;
}
.access__fine a { color: var(--dim-5); }
.form-error {
  color: #FF8A7A; font-family: var(--mono); font-size: 12.5px;
  letter-spacing: .02em; margin-top: 14px; text-align: center;
}
.form-success { text-align: center; padding: 18px 0 8px; }
.form-success .check {
  width: 48px; height: 48px; border-radius: 50%; margin: 0 auto 18px;
  background: rgba(25, 80, 226, .16); border: 1px solid rgba(59, 114, 255, .5);
  display: flex; align-items: center; justify-content: center; color: var(--blue-hi);
}
.form-success h3 { font-size: 22px; color: #fff; margin-bottom: 10px; }
.form-success p { font-size: 15px; line-height: 1.6; color: var(--ink-3); max-width: 420px; margin: 0 auto; }

.cta__alt { margin-top: 26px; font-size: 14.5px; color: var(--ink-3); }
.cta__alt a { color: var(--ink); border-bottom: 1px solid rgba(255, 255, 255, .3); }
.cta__alt a:hover { color: #fff; border-color: #fff; }

@media (min-width: 700px) {
  .access { padding: 34px 34px 30px; }
  .access__grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .access__head h3 { font-size: 23px; }
}

/* ---------------------------------------------------------------- footer -- */
.site-footer { background: var(--bg); padding: 48px 0 36px; }
.site-footer__top {
  display: grid; gap: 32px; padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.site-footer__brand img { height: 22px; width: auto; filter: brightness(1.45) saturate(1.05); }
.site-footer__brand div { font-family: var(--mono); font-size: 12.5px; letter-spacing: .12em; color: var(--dim); margin-top: 16px; }
.fcol { display: flex; flex-direction: column; gap: 12px; }
.fcol__h { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--dim-3); margin-bottom: 2px; }
.fcol a { color: var(--ink-4); font-size: 14.5px; display: flex; align-items: center; gap: 9px; }
.fcol a:hover { color: #fff; }
.ficon {
  width: 18px; height: 18px; border-radius: 3px; background: var(--blue); color: #fff;
  font-size: 10px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex: none;
}
.ficon--yt { border-radius: 4px; }
.ficon--yt i { width: 0; height: 0; border-left: 6px solid #fff; border-top: 4px solid transparent; border-bottom: 4px solid transparent; margin-left: 2px; }
.site-footer__base {
  display: flex; flex-direction: column; gap: 14px; padding-top: 24px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--dim-3);
}
.site-footer__base a { color: var(--dim-3); }
.site-footer__base a:hover { color: var(--ink-4); }
.site-footer__base .legal { display: flex; gap: 22px; flex-wrap: wrap; }

@media (min-width: 760px) {
  .site-footer { padding: 64px 0 44px; }
  .site-footer__top { grid-template-columns: 1fr auto auto auto; gap: 48px; padding-bottom: 44px; }
  .site-footer__base { flex-direction: row; justify-content: space-between; align-items: center; padding-top: 26px; font-size: 11.5px; }
}
@media (min-width: 1000px) { .site-footer__top { gap: 64px; } }

/* ------------------------------------------------------- insights article -- */
/* The working-paper page reads as a document: white page, dark header, dark
   hero band and dark footer each supplying their own surface. */
body.page-light { background: var(--white); color: var(--l-ink); }

.crumb { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--dim); }
.crumb a { color: var(--dim); }
.crumb a:hover { color: var(--ink-4); }

.paper-hero { background: var(--l-ink); color: #fff; padding: 24px 0 60px; }
.paper-hero__grid { display: grid; gap: 40px; align-items: end; margin-top: 32px; }
.paper-hero h1 { font-size: clamp(32px, 8vw, 62px); line-height: 1.03; letter-spacing: -.032em; margin-bottom: 18px; }
.paper-hero__sub { font-size: 17px; line-height: 1.5; color: var(--ink-2); max-width: 640px; margin-bottom: 26px; }
.paper-hero__meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--dim-4);
}
.paper-hero__meta i { width: 4px; height: 4px; border-radius: 50%; background: #3B4553; display: block; }
.paper-hero__cta { display: flex; flex-direction: column; gap: 12px; margin-top: 32px; }
.paper-hero__fine { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--dim-2); margin-top: 16px; }

.paper-body { max-width: var(--wrap); margin: 0 auto; padding: 56px var(--pad) 0; display: grid; gap: 48px; align-items: start; color: var(--l-ink); }
.paper-body h2 { font-size: clamp(26px, 6vw, 38px); line-height: 1.12; letter-spacing: -.028em; margin-bottom: 22px; max-width: 720px; }
.paper-body h3 { font-size: clamp(22px, 5vw, 30px); line-height: 1.15; letter-spacing: -.022em; margin-bottom: 24px; }
.paper-body > div > p { font-size: 17px; line-height: 1.65; color: var(--l-ink-3); max-width: 720px; }
.paper-body > div > p + p { margin-top: 18px; }

.definition { margin-top: 48px; border: 1px solid var(--l-line); border-radius: var(--radius); overflow: hidden; }
.definition__h { background: var(--l-ink); color: #fff; padding: 18px 24px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; }
.definition__b { padding: 28px 24px; }
.definition__term { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.definition__def { font-size: 18px; line-height: 1.55; color: var(--l-ink-2); }
.definition__note { font-size: 15.5px; line-height: 1.65; color: var(--l-mute-3); margin-top: 20px; }

.twoup { display: grid; gap: 16px; }
.twoup > div { border: 1px solid var(--l-line); border-radius: var(--radius); padding: 26px 22px; }
.twoup .is-dark { border-color: var(--l-ink); background: var(--l-ink); color: #fff; }
.twoup__label { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--l-mute-5); margin-bottom: 16px; }
.twoup .is-dark .twoup__label { color: var(--dim-4); }
.twoup__lead { font-size: 20px; font-weight: 600; letter-spacing: -.015em; margin-bottom: 12px; }
.twoup__body { font-size: 15.5px; line-height: 1.6; color: var(--l-mute-2); }
.twoup .is-dark .twoup__body { color: #9AA5B4; }

.sysdiagram { margin-top: 56px; background: var(--paper); border-radius: var(--radius); padding: 30px 22px 34px; }
.sysdiagram__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.sysdiagram__row span {
  font-family: var(--mono); font-size: 11px; letter-spacing: .06em;
  background: var(--white); border: 1px solid var(--l-line); border-radius: 6px; padding: 10px 12px;
}
.sysdiagram__row .is-pcp { background: var(--blue); color: #fff; border-color: var(--blue); }
.sysdiagram__row .is-dashed { border-style: dashed; border-color: #C3CAD4; }
.sysdiagram__row .arrow { background: none; border: 0; color: var(--l-mute-6); padding: 0; }
.sysdiagram__row .note { background: none; border: 0; font-family: var(--sans); font-size: 13.5px; color: var(--l-mute-4); padding: 0; }
.sysdiagram__pair { display: grid; gap: 14px; margin-bottom: 22px; }
.sysdiagram__pair > div { background: var(--white); border: 1px solid var(--l-line); border-left: 3px solid var(--l-ink); border-radius: 6px; padding: 15px 16px; }
.sysdiagram__pair > div:last-child { border-left-color: #C9CFD8; }
.sysdiagram__pair strong { display: block; font-size: 14.5px; margin-bottom: 6px; }
.sysdiagram__pair span { font-family: var(--mono); font-size: 11.5px; color: var(--l-mute-3); line-height: 1.6; }
.sysdiagram__concl { font-size: 16px; font-weight: 600; letter-spacing: -.01em; }
.sysdiagram__src { font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--l-mute-6); margin-top: 10px; }

.claims { display: flex; flex-direction: column; gap: 16px; }
.claim { border: 1px solid var(--l-line); border-radius: var(--radius); padding: 26px 22px; }
.claim--hypothesis { border-color: var(--blue); background: #F5F8FF; }
.claim__tag {
  display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: .14em;
  background: var(--l-ink); color: #fff; border-radius: 999px; padding: 6px 13px; margin-bottom: 16px;
}
.claim--hypothesis .claim__tag { background: var(--blue); }
.claim__text { font-size: 17.5px; line-height: 1.55; color: var(--l-ink-2); }

.takeaways { display: grid; gap: 20px; }
.takeaways > div { border-top: 2px solid var(--l-ink); padding-top: 18px; }
.takeaways dt { font-size: 18px; font-weight: 600; letter-spacing: -.015em; margin-bottom: 10px; }
.takeaways dd { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--l-mute-2); }

.respond { margin-top: 56px; border: 1px solid var(--l-line); border-radius: var(--radius); padding: 30px 26px; }
.respond__lead { font-size: 19px; line-height: 1.55; color: var(--l-ink-2); margin-bottom: 16px; }
.respond p { font-size: 16px; line-height: 1.65; color: var(--l-mute-2); margin-bottom: 24px; }

.author { margin-top: 52px; padding-top: 36px; border-top: 1px solid var(--l-line-2); display: grid; gap: 20px; }
.author__label { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; color: var(--l-mute-4); }
.author__name { font-size: 21px; font-weight: 700; letter-spacing: -.015em; margin-bottom: 14px; }
.author__bio { font-size: 16.5px; line-height: 1.65; color: var(--l-ink-3); max-width: 660px; }

.praxon-note { margin-top: 44px; padding: 24px; background: var(--paper); border-radius: var(--radius); }
.praxon-note p { font-size: 16px; line-height: 1.6; color: var(--l-ink-3); }
.praxon-note a { display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: .1em; color: var(--l-mute-4); margin-top: 12px; }
.praxon-note a:hover { color: var(--blue); }

.paper-aside { display: grid; gap: 18px; }
.paper-aside__box { border: 1px solid var(--l-line); border-radius: var(--radius); padding: 24px 22px; }
.paper-aside__h { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--l-mute-5); margin-bottom: 16px; }
.paper-aside ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; font-size: 14.5px; color: var(--l-ink-3); }
.paper-aside ol a { color: var(--l-ink-3); }
.paper-aside ol a:hover { color: var(--blue); }
.paper-aside__rule { height: 1px; background: var(--l-line-3); margin: 20px 0; }
.paper-aside .btn { width: 100%; font-size: 15px; padding: 13px; }
.paper-aside .btn + .btn { margin-top: 10px; }
.paper-aside__fine { font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--l-mute-6); margin-top: 14px; text-align: center; }
.paper-aside__more { font-size: 14.5px; line-height: 1.6; color: var(--l-mute-3); }

.paper-foot-rule { margin-top: 72px; }

@media (min-width: 700px) {
  .paper-hero__cta { flex-direction: row; }
  .twoup { grid-template-columns: 1fr 1fr; gap: 20px; }
  .takeaways { grid-template-columns: 1fr 1fr; gap: 22px; }
  .sysdiagram__pair { grid-template-columns: 1fr 1fr; gap: 16px; }
  .author { grid-template-columns: 200px 1fr; gap: 36px; }
}
@media (min-width: 900px) {
  .paper-hero { padding: 26px 0 88px; }
  .paper-hero__grid { grid-template-columns: 1fr 400px; gap: 80px; margin-top: 44px; }
  .paper-hero__sub { font-size: 20px; margin-bottom: 30px; }
  .paper-hero__meta { gap: 20px; font-size: 12px; }
  .paper-body { padding: 88px var(--pad) 0; grid-template-columns: 1fr 320px; gap: 88px; }
  .paper-body > div > p { font-size: 18.5px; }
  .paper-body > div > p + p { margin-top: 20px; }
  .definition { margin-top: 56px; }
  .definition__h { padding: 20px 28px; }
  .definition__b { padding: 32px 28px; }
  .definition__def { font-size: 19px; }
  .twoup > div { padding: 28px 26px; }
  .twoup__lead { font-size: 22px; }
  .sysdiagram { padding: 40px 36px 44px; }
  .sysdiagram__row span { font-size: 11.5px; padding: 11px 14px; }
  .claim { padding: 30px 28px; }
  .claim__text { font-size: 19px; }
  .takeaways dt { font-size: 19px; }
  .respond { margin-top: 72px; padding: 38px 34px; }
  .respond__lead { font-size: 20px; }
  .respond p { font-size: 16.5px; }
  .author { margin-top: 64px; padding-top: 44px; }
  .author__name { font-size: 22px; }
  .author__bio { font-size: 17px; }
  .praxon-note { margin: 56px 0 0; padding: 26px 28px; }
  .paper-aside { position: sticky; top: 96px; }
  .paper-aside__box { padding: 26px 24px; }
  .paper-foot-rule { margin-top: 96px; }
}

/* ------------------------------------------------------- insights index -- */
.ilist { display: grid; gap: 20px; margin-top: 40px; }
.icard {
  display: grid; gap: 22px; align-items: center;
  background: var(--white); border: 1px solid var(--l-line-2); border-radius: var(--radius);
  padding: 28px 24px; color: var(--l-ink);
}
.icard h2 { font-size: clamp(24px, 5.4vw, 34px); margin-bottom: 12px; }
.icard p { font-size: 16px; line-height: 1.6; color: var(--l-mute); margin-bottom: 18px; }
.icard__meta { font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; color: var(--l-mute-4); margin-bottom: 16px; }
.icard .paper-cover { max-width: 240px; }
.icard__soon { font-size: 15.5px; line-height: 1.6; color: var(--l-mute-3); }

@media (min-width: 760px) {
  .icard { grid-template-columns: 1fr 240px; gap: 40px; padding: 34px 30px; }
}

/* ------------------------------------- Praxon icon placements (rev 3) -- */
/* The icon family extends onto the homepage in exactly the 17 placements in
   section 08B of the handoff. Sizing is the element's own `size` attribute,
   swapped at the 900px breakpoint by site.js, because the component renders a
   fixed-size SVG in shadow DOM that outside CSS cannot resize.
   Colour and the hover lift come from praxon-icons.js itself, which also
   disables the lift under prefers-reduced-motion. Nothing is duplicated here.

   The four cost-of-the-gap markers and the product rail are desktop-only,
   which is what brings the mobile set to the specified 12 of the 17. */

/* 03 · three story cards */
.pcard__icon { display: block; margin-bottom: 12px; }
.pcard--dark .pcard__icon { color: var(--blue-hi); }

/* 03 · four cost-of-the-gap markers, desktop only */
.problem__icon { display: none; margin-bottom: 12px; }

/* 04 · six product moves, one templated icon per step, inheriting selection */
.walk__icon { color: var(--dim-2); align-self: flex-start; margin-top: 1px; flex: none; }
.walk__step[aria-selected="true"] .walk__icon { color: var(--blue); }

/* 05 · Field CAD section mark */
.eyebrow--icon { display: flex; align-items: center; gap: 10px; }
.eyebrow--icon praxon-icon { flex: none; }

/* 05 · connected measuring tools, and the LiDAR section header */
.measure__badges praxon-icon, .lidar__badges praxon-icon { flex: none; }

/* 06 · verify -> close out sequence chips */
.flow span praxon-icon { margin-right: 7px; vertical-align: -2px; }
.flow .is-first praxon-icon, .flow .is-last praxon-icon { color: #fff; }

@media (min-width: 760px) {
  .pcard__icon { margin-bottom: 18px; }
  .problem__icon { display: block; }
}

/* ------------------------------------------- homepage CTA card (rev 3) -- */
/* Lives at the end of the Field CAD section and points at /features. */
.features-cta {
  display: flex; flex-direction: column; gap: 18px;
  margin-top: 32px; padding: 26px 24px;
  border: 1px solid var(--l-line); border-radius: var(--radius);
  background: var(--paper-2); color: var(--l-ink);
  text-decoration: none;
  transition: border-color .2s, background-color .2s;
}
.features-cta:hover { border-color: var(--blue); background: #fff; color: var(--l-ink); }
.features-cta__label { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: .13em; color: var(--l-mute-4); margin-bottom: 10px; }
.features-cta__title { display: block; font-size: clamp(21px, 4.4vw, 26px); font-weight: 700; letter-spacing: -.02em; margin-bottom: 8px; }
.features-cta__body { display: block; font-size: 15.5px; line-height: 1.6; color: var(--l-mute); }
.features-cta__go {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em;
  color: var(--blue); white-space: nowrap; flex: none;
}
@media (min-width: 760px) {
  .features-cta { flex-direction: row; align-items: center; justify-content: space-between; gap: 32px; padding: 30px 32px; margin-top: 40px; }
}