/* ============================================================
   Noetico — site.css
   Warm bone ground, ink type, one signal accent.

   No boxes: sections are separated by whitespace and single
   hairline rules, never by outlined cells. Depth comes from
   soft gradient washes instead of borders.

   ACCENT SWAP: --signal is the fill (ink type sits on it);
   --signal-deep is the same hue darkened enough to be legible
   as TEXT on bone. Change both together.
     #4ED9BC / #0A6E5D   teal      (current)
     #E8622C / #B23F12   vermilion
     #C9A227 / #7A6110   brass
   ============================================================ */

:root {
  --signal: #4ED9BC;
  --signal-deep: #0A6E5D;
  --signal-wash: rgba(78, 217, 188, 0.20);

  --bg: #F5F2EA;
  --bg-tint: #EFEBE0;

  --fg: #1A1A16;
  /* alphas chosen so both composite to WCAG AA on the bone ground:
     0.72 -> 6.57:1 (body), 0.62 -> 4.70:1 (small mono labels) */
  --fg-dim: rgba(26, 26, 22, 0.72);
  --fg-faint: rgba(26, 26, 22, 0.62);
  --line: rgba(26, 26, 22, 0.12);
  --line-soft: rgba(26, 26, 22, 0.06);

  --font-display: "Space Grotesk", "Helvetica Neue", Helvetica, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Helvetica, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --wrap: 1320px;
  --gutter: 6vw;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  background-image: linear-gradient(180deg, #F8F6EF 0%, #F4F1E8 46%, #EFEBE0 100%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.62;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--signal); color: var(--fg); }

img, svg { max-width: 100%; display: block; }
a { color: inherit; }

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

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--fg); color: var(--bg);
  padding: 12px 20px; font-family: var(--font-mono); font-size: 13px;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- layout primitives ---------- */

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

section { padding: 118px 0; position: relative; }

/* soft band instead of a filled panel — fades out, so it has no hard edge */
.band-tint::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 22, 0.05) 0%, rgba(26, 26, 22, 0.012) 60%, rgba(26, 26, 22, 0) 100%);
  pointer-events: none;
}
.band-tint > .wrap { position: relative; z-index: 1; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--signal-deep);
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 28px;
}
.eyebrow::after {
  content: ""; height: 1px; flex: 0 0 56px;
  background: linear-gradient(90deg, var(--signal-deep), transparent);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

h2 { font-size: clamp(30px, 4.6vw, 58px); max-width: 19ch; }
.h2-wide { max-width: 26ch; }

h3 { font-size: 20px; letter-spacing: -0.02em; line-height: 1.22; }

.lead {
  font-size: clamp(17px, 1.5vw, 20px);
  color: var(--fg-dim);
  max-width: 58ch;
  line-height: 1.62;
}

.accent { color: var(--signal-deep); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px; letter-spacing: 0.13em; text-transform: uppercase;
  text-decoration: none;
  padding: 15px 28px;
  border-radius: 100px;
  border: 1px solid transparent;
  transition: background .3s var(--ease), color .3s var(--ease),
              border-color .3s var(--ease), transform .3s var(--ease);
  white-space: nowrap; cursor: pointer;
}
.btn-primary {
  background: linear-gradient(120deg, var(--signal) 0%, #7FE6D0 100%);
  color: var(--fg); font-weight: 500;
}
.btn-primary:hover { background: var(--fg); color: var(--bg); transform: translateY(-2px); }
.btn-ghost { border-color: var(--line); color: var(--fg); }
.btn-ghost:hover { border-color: var(--fg); background: rgba(26, 26, 22, 0.04); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- nav ---------- */

nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px var(--gutter);
  transition: background .35s var(--ease), backdrop-filter .35s var(--ease),
              border-color .35s var(--ease), padding .35s var(--ease);
  border-bottom: 1px solid transparent;
}
nav.stuck {
  background: rgba(246, 243, 236, 0.82);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom-color: var(--line-soft);
  padding-top: 14px; padding-bottom: 14px;
}

.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--fg); }
.brand svg { flex: 0 0 auto; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 700; font-size: 21px;
  letter-spacing: -0.025em; line-height: 1;
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 11.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--fg-dim);
  text-decoration: none; transition: color .22s;
}
.nav-links a:not(.btn):hover { color: var(--fg); }
.nav-links .btn { padding: 11px 20px; }
.nav-links a.btn-primary { color: var(--fg); font-weight: 500; }
.nav-links a.btn-primary:hover { color: var(--bg); }
.nav-links a.btn-ghost { color: var(--fg); }

/* ---------- hero ---------- */

.hero {
  min-height: 100svh;
  display: flex; align-items: center;
  padding: 150px 0 70px;
}
.hero::before {
  content: "";
  position: absolute; top: -26%; left: 50%;
  width: min(1150px, 100vw); aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--signal-wash) 0%, rgba(78, 217, 188, 0.05) 42%, rgba(0, 0, 0, 0) 68%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; width: 100%; }

h1 {
  font-size: clamp(42px, 8.4vw, 116px);
  line-height: 0.96;
  letter-spacing: -0.042em;
  text-transform: uppercase;
  max-width: 15ch;
  margin-bottom: 34px;
}

.hero-sub {
  font-size: clamp(16.5px, 1.45vw, 20px);
  color: var(--fg-dim);
  max-width: 62ch;
  margin-bottom: 42px;
}
.hero-sub strong { color: var(--fg); font-weight: 500; }

.hero-meta {
  margin-top: 64px;
  display: flex; flex-wrap: wrap; gap: 10px 30px;
  font-family: var(--font-mono);
  font-size: 11.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--fg-faint);
}

/* ---------- client wall (no grid, just air) ---------- */

.clients { padding: 74px 0; }
.clients-label {
  font-family: var(--font-mono);
  font-size: 11.5px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--fg-faint);
  text-align: center; margin-bottom: 44px;
}
/* grid rather than flex-wrap: flex leaves an orphan on the second row at
   intermediate widths, a grid always distributes evenly */
.client-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 40px 32px;
  /* cells stretch (default) so the sub-labels share a baseline even when a
     wordmark wraps to two lines */
}
.client {
  display: grid; grid-template-rows: 1fr auto;
  justify-items: center; align-items: center;
  gap: 7px; text-align: center;
}
.client-mark {
  font-family: var(--font-display);
  font-weight: 500; font-size: 19px;
  letter-spacing: -0.02em; line-height: 1.2;
  color: var(--fg);
}
.client-sub {
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--fg-faint);
}
.client img { max-height: 30px; width: auto; filter: grayscale(1); opacity: .78; }

/* ---------- stats ---------- */

.stats { padding: 96px 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 54px 44px; }
.stat-n {
  font-family: var(--font-display);
  font-size: clamp(46px, 5.6vw, 76px);
  font-weight: 500; letter-spacing: -0.05em; line-height: 1;
  margin-bottom: 15px;
  color: var(--signal-deep);
  background: linear-gradient(150deg, var(--signal-deep) 0%, #14493F 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-t { color: var(--fg-dim); font-size: 15.5px; max-width: 26ch; }

/* ---------- section header ---------- */

.sec-head {
  display: grid; grid-template-columns: 1.15fr 1fr;
  gap: 60px; align-items: end; margin-bottom: 72px;
}
.sec-head .lead { margin-bottom: 0; }

/* ---------- rule-separated item grids (was: bordered cells) ---------- */

.prob-grid, .ind-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0 44px;
}
.prob, .ind {
  padding: 30px 0 0;
  border-top: 1px solid var(--line);
  position: relative;
}
/* the rule brightens to signal on hover — motion without a box */
.prob::after, .ind::after {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 0; height: 1px;
  background: linear-gradient(90deg, var(--signal-deep), transparent);
  transition: width .5s var(--ease);
}
.prob:hover::after, .ind:hover::after { width: 100%; }

.prob-n {
  font-family: var(--font-mono); font-size: 11.5px;
  letter-spacing: 0.2em; color: var(--signal-deep); margin-bottom: 22px;
}
.prob h3, .ind h3 { margin-bottom: 13px; }
.prob p, .ind p { color: var(--fg-dim); font-size: 15.5px; }
.ind p { margin-bottom: 20px; }
.ind-proof {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--signal-deep);
}

/* ---------- capability rows ---------- */

.cap { border-top: 1px solid var(--line); }
.cap:last-of-type { border-bottom: 1px solid var(--line); }
.cap-row {
  display: grid; grid-template-columns: 90px 1.05fr 1.35fr;
  gap: 40px; padding: 44px 0; align-items: start;
}
.cap-n {
  font-family: var(--font-mono); font-size: 12.5px;
  letter-spacing: 0.16em; color: var(--signal-deep); padding-top: 7px;
}
.cap-row h3 { font-size: clamp(22px, 2.3vw, 30px); letter-spacing: -0.028em; }
.cap-body p { color: var(--fg-dim); font-size: 16px; margin-bottom: 20px; }

/* soft chips, no outlines */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--fg-dim);
  background: rgba(26, 26, 22, 0.055);
  border-radius: 100px;
  padding: 7px 14px;
}

/* ---------- method ---------- */

.method-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0 44px; border-top: 1px solid var(--line);
}
.step { padding: 38px 0 0; position: relative; }
.step::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 0; height: 1px;
  background: linear-gradient(90deg, var(--signal-deep), rgba(10, 110, 93, 0.15));
  transition: width 1.1s var(--ease);
}
.method-grid.in .step::before { width: 100%; }
.method-grid.in .step:nth-child(2)::before { transition-delay: .12s; }
.method-grid.in .step:nth-child(3)::before { transition-delay: .24s; }
.method-grid.in .step:nth-child(4)::before { transition-delay: .36s; }
.step-n {
  font-family: var(--font-mono); font-size: 11.5px;
  letter-spacing: 0.2em; color: var(--signal-deep); margin-bottom: 22px;
}
.step h3 { margin-bottom: 12px; }
.step p { color: var(--fg-dim); font-size: 15.5px; }

/* ---------- comparison (hairlines only) ---------- */

.compare { width: 100%; border-collapse: collapse; }
.compare th, .compare td {
  text-align: left; padding: 22px 24px 22px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px; vertical-align: top;
}
.compare thead th {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-faint); border-bottom-color: var(--line);
  font-weight: 400; padding-bottom: 15px;
}
.compare thead th.us { color: var(--signal-deep); }
.compare tbody th {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-faint); font-weight: 400; width: 17%;
}
.compare td { color: var(--fg-dim); }
.compare td.us {
  color: var(--fg); font-weight: 500;
  background: linear-gradient(90deg, var(--signal-wash), rgba(78, 217, 188, 0.06));
  padding-left: 22px;
}
.compare tbody tr:last-child th, .compare tbody tr:last-child td { border-bottom: none; }

/* ---------- objections ---------- */

.obj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 44px; }
.obj { padding: 30px 0 0; border-top: 1px solid var(--line); }
.obj-q {
  font-family: var(--font-display); font-size: 19px;
  letter-spacing: -0.022em; line-height: 1.3;
  color: var(--fg); margin-bottom: 15px;
}
.obj p { color: var(--fg-dim); font-size: 15.5px; }

/* ---------- gradient CTA panel ---------- */

.midcta {
  border-radius: 8px;
  padding: 46px 48px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 40px; align-items: center;
  background: linear-gradient(115deg, var(--signal-wash) 0%, rgba(78, 217, 188, 0.05) 48%, rgba(26, 26, 22, 0.03) 100%);
}
.midcta h3 { font-size: clamp(22px, 2.4vw, 29px); margin-bottom: 12px; max-width: 24ch; }
.midcta p { color: var(--fg-dim); font-size: 15.5px; max-width: 54ch; }

/* ---------- contact ---------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 80px; }
.contact-facts { margin-top: 44px; display: grid; gap: 26px; }
.fact-k {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-faint); margin-bottom: 6px;
}
.fact-v { font-size: 16px; color: var(--fg); text-decoration: none; }
a.fact-v:hover { color: var(--signal-deep); }

form { display: grid; gap: 22px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.field { display: grid; gap: 9px; }
label {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--fg-faint);
}
input, select, textarea {
  background: transparent; border: none;
  border-bottom: 1px solid var(--line);
  color: var(--fg); font-family: var(--font-body);
  font-size: 16px; padding: 11px 0;
  border-radius: 0; transition: border-color .25s;
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-bottom-color: var(--signal-deep); }
select { appearance: none; cursor: pointer; color: var(--fg-dim); }
textarea { resize: vertical; min-height: 76px; }
.hp { position: absolute; left: -9999px; }
.form-note {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.1em; color: var(--fg-faint); line-height: 1.7;
}

/* ---------- footer ---------- */

footer { padding: 70px 0 44px; border-top: 1px solid var(--line-soft); }
.foot-bottom {
  display: flex; justify-content: space-between; gap: 24px;
  flex-wrap: wrap; padding-top: 26px; border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.1em; color: var(--fg-faint);
}

/* ---------- scroll reveal ---------- */

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .85s var(--ease), transform .85s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }

h2[data-split] .ln { display: block; overflow: hidden; }
h2[data-split] .ln > span { display: block; transform: translateY(102%); transition: transform .9s var(--ease); }
h2[data-split].in .ln > span { transform: none; }
h2[data-split] .ln:nth-child(2) > span { transition-delay: .07s; }
h2[data-split] .ln:nth-child(3) > span { transition-delay: .14s; }
h2[data-split] .ln:nth-child(4) > span { transition-delay: .21s; }

/* ============================================================
   TECHNOLOGY — tabbed stack
   ============================================================ */

.tech-tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  margin-bottom: 64px;
  overflow-x: auto;
  scrollbar-width: none; -ms-overflow-style: none;
  position: sticky; top: 61px; z-index: 5;
  background: var(--bg);
  scroll-behavior: smooth;
}
.tech-tabs::-webkit-scrollbar { display: none; }

.tech-tab {
  flex: 1 0 auto;
  display: flex; align-items: center; gap: 9px;
  background: none; border: none;
  color: var(--fg-faint);
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 18px 22px;
  cursor: pointer; white-space: nowrap;
  position: relative;
  transition: color .22s var(--ease);
}
.tech-tab .n { opacity: .55; }
.tech-tab::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--signal-deep), var(--signal));
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.tech-tab:hover { color: var(--fg-dim); }
.tech-tab[aria-selected="true"] { color: var(--fg); }
.tech-tab[aria-selected="true"]::after { transform: scaleX(1); }

.tech-body { display: grid; grid-template-columns: 340px 1fr; gap: 76px; align-items: start; }
.tech-diagram { position: sticky; top: 132px; }
.stack { width: 100%; height: auto; }

.stack .ctrl { opacity: .45; transition: opacity .4s var(--ease); }
.stack.control-on .ctrl { opacity: 1; }
.stack .ctrl-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  fill: var(--fg-faint); text-anchor: middle;
  transition: fill .4s var(--ease);
}
.stack.control-on .ctrl-label { fill: var(--signal-deep); }

.stack .b-on { opacity: 0; transition: opacity .4s var(--ease); }
.stack .band.on .b-on { opacity: 1; }
.stack .band text {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  fill: var(--fg-faint);
  transition: fill .4s var(--ease);
}
.stack .band.on text { fill: var(--fg); }
.stack .band .num { opacity: .75; }

.tech-panel[hidden] { display: none; }
.tech-panel { animation: techIn .5s var(--ease); }
@keyframes techIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.tech-sys {
  display: flex; align-items: center; gap: 13px; margin-bottom: 20px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--fg-faint);
}
.tech-sys .mark { width: 28px; height: 28px; color: var(--signal-deep); }

.tech-title {
  font-family: var(--font-display);
  font-size: clamp(25px, 3vw, 38px);
  font-weight: 500; letter-spacing: -0.03em; line-height: 1.08;
  margin-bottom: 18px; max-width: 20ch;
}
.tech-lead { color: var(--fg-dim); font-size: 17px; max-width: 56ch; }
.tech-panel p.para { color: var(--fg-dim); font-size: 16px; max-width: 56ch; }

.tech-k {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-faint);
  padding-top: 20px; margin: 38px 0 16px;
  border-top: 1px solid var(--line);
}
.tech-problem {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.36; letter-spacing: -0.02em;
  color: var(--fg); max-width: 46ch;
}

.tech-caps { list-style: none; display: grid; gap: 26px; }
.tech-caps li { display: grid; grid-template-columns: 44px 1fr; gap: 6px; }
.tech-caps .cn {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; color: var(--signal-deep); padding-top: 4px;
}
.tech-caps h3 {
  font-family: var(--font-display); font-size: 17px; font-weight: 500;
  letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 5px;
}
.tech-caps p { color: var(--fg-dim); font-size: 15.5px; max-width: 52ch; }
.tech-panel .tags { margin-top: 34px; }

/* ============================================================
   MULTI-PAGE CHROME
   ============================================================ */

.mark { width: 22px; height: 22px; flex: 0 0 auto; color: var(--fg-faint); overflow: visible; }
.acc { fill: var(--signal-deep); }
.mark-lg { width: 34px; height: 34px; }
.eyebrow .mark { color: var(--signal-deep); width: 18px; height: 18px; }

.nav-right { display: flex; align-items: center; gap: 30px; }
.cta-short { display: none; }

.nav-toggle {
  display: none; width: 40px; height: 40px;
  background: none; border: 1px solid var(--line);
  border-radius: 100px; cursor: pointer; position: relative;
  transition: border-color .25s;
}
.nav-toggle:hover { border-color: var(--fg-faint); }
.nav-toggle span {
  position: absolute; left: 11px; width: 18px; height: 1.5px;
  background: var(--fg); border-radius: 2px;
  transition: transform .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 16px; }
.nav-toggle span:nth-child(2) { top: 22px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

.nav-links a[aria-current="page"] { color: var(--signal-deep); }

/* ---------- interior page hero ---------- */

.page-hero { padding: 164px 0 78px; position: relative; }
.page-hero::before {
  content: "";
  position: absolute; top: -34%; left: 50%;
  width: min(950px, 100vw); aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--signal-wash) 0%, rgba(0, 0, 0, 0) 64%);
  pointer-events: none;
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: clamp(38px, 6.2vw, 80px);
  max-width: 17ch; margin-bottom: 26px;
  text-transform: none; letter-spacing: -0.038em;
}
.page-hero .lead { font-size: clamp(17px, 1.6vw, 21px); max-width: 60ch; }

/* ---------- explore (rules + gradient hover, no cells) ---------- */

.explore-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.explore {
  position: relative;
  padding: 38px 0 42px;
  border-top: 1px solid var(--line);
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 13px;
}
.explore::before {
  content: ""; position: absolute; inset: -1px -24px 0 -24px;
  background: radial-gradient(120% 130% at 10% 0%, var(--signal-wash) 0%, rgba(0, 0, 0, 0) 62%);
  opacity: 0; transition: opacity .45s var(--ease);
  pointer-events: none;
}
.explore:hover::before { opacity: 1; }
.explore > * { position: relative; }
.explore-top { display: flex; align-items: center; justify-content: space-between; }
.explore h3 { font-size: 24px; }
.explore p { color: var(--fg-dim); font-size: 15.5px; max-width: 44ch; }
.explore .go {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--signal-deep); margin-top: auto; padding-top: 16px;
  display: flex; align-items: center; gap: 8px;
  transition: gap .3s var(--ease);
}
.explore:hover .go { gap: 15px; }
.explore .mark { transition: color .3s var(--ease); }
.explore:hover .mark { color: var(--signal-deep); }

/* ---------- next page ---------- */

.nextpage {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding: 34px 0 0;
  text-decoration: none; color: inherit;
  position: relative;
}
.nextpage::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 0; height: 1px;
  background: linear-gradient(90deg, var(--signal-deep), transparent);
  transition: width .55s var(--ease);
}
.nextpage:hover::before { width: 100%; }
.nextpage .k {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-faint); margin-bottom: 8px;
}
.nextpage h3 { font-size: clamp(20px, 2.2vw, 28px); }
.nextpage .arrow {
  color: var(--signal-deep); font-size: 26px; line-height: 1;
  transition: transform .35s var(--ease);
}
.nextpage:hover .arrow { transform: translateX(8px); }

/* ---------- footer sitemap ---------- */

.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 44px; padding-bottom: 50px; }
.foot-col h4 {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-faint); font-weight: 400; margin-bottom: 18px;
}
.foot-col a, .foot-col p {
  display: block; color: var(--fg-dim); font-size: 15px;
  text-decoration: none; margin-bottom: 10px;
}
.foot-col a:hover { color: var(--signal-deep); }
.foot-brand p { color: var(--fg-dim); font-size: 15px; max-width: 34ch; margin-top: 16px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1080px) {
  .stat-grid, .prob-grid, .ind-grid, .method-grid { grid-template-columns: repeat(2, 1fr); gap: 0 36px; }
  .stat-grid { gap: 48px 36px; }
  .prob, .ind, .step { padding-bottom: 34px; }
  .obj-grid { grid-template-columns: 1fr; }
  .obj { padding-bottom: 26px; }
  .sec-head { grid-template-columns: 1fr; gap: 26px; align-items: start; }
  .contact-grid { grid-template-columns: 1fr; gap: 56px; }
  .cap-row { grid-template-columns: 60px 1fr; }
  .cap-row .cap-body { grid-column: 2; }
  .midcta { grid-template-columns: 1fr; }
  .tech-body { grid-template-columns: 1fr; gap: 48px; }
  .tech-diagram { position: static; max-width: 330px; margin: 0 auto; }
  .tech-tabs { margin-bottom: 44px; }
  .client-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-right { gap: 12px; }
  .cta-long { display: none; }
  .cta-short { display: inline; }

  .nav-links {
    position: fixed; inset: 0;
    background: var(--bg);
    background-image: linear-gradient(180deg, #F8F6EF 0%, #EFEBE0 100%);
    flex-direction: column;
    align-items: flex-start; justify-content: center;
    gap: 4px; padding: 0 8vw; z-index: 90;
    opacity: 0; visibility: hidden;
    transition: opacity .3s var(--ease), visibility .3s;
  }
  .nav-links.open { opacity: 1; visibility: visible; }
  .nav-links a {
    font-family: var(--font-display);
    font-size: clamp(30px, 8vw, 46px);
    letter-spacing: -0.03em; text-transform: none;
    color: var(--fg); padding: 11px 0;
  }
  body.menu-open { overflow: hidden; }

  /* backdrop-filter on the stuck nav creates a containing block for fixed
     descendants, collapsing the overlay to the nav's height. */
  body.menu-open nav {
    backdrop-filter: none; -webkit-backdrop-filter: none;
    background: transparent; border-bottom-color: transparent;
  }
  /* the overlay is a positioned descendant of <nav>, so it paints above its
     non-positioned siblings — lift the controls or it cannot be closed. */
  .brand, .nav-toggle, .nav-right > .btn { position: relative; z-index: 95; }

  .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  section { padding: 84px 0; }
  .hero { padding: 128px 0 60px; min-height: auto; }
  .page-hero { padding: 128px 0 58px; }
  .stat-grid, .prob-grid, .ind-grid, .method-grid, .explore-grid { grid-template-columns: 1fr; }
  .stat-grid { gap: 40px; }
  .cap-row { grid-template-columns: 1fr; gap: 18px; padding: 36px 0; }
  .cap-row .cap-body { grid-column: 1; }
  .cap-n { padding-top: 0; }
  .field-row { grid-template-columns: 1fr; }
  .midcta { padding: 32px 26px; }
  .hero-meta { gap: 8px 20px; margin-top: 46px; }
  .client-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; }
  .tech-tab { padding: 15px 17px; font-size: 10.5px; letter-spacing: 0.12em; }
  .tech-caps li { grid-template-columns: 34px 1fr; }
  .tech-k { margin: 32px 0 14px; }
  .tech-tabs {
    -webkit-mask-image: linear-gradient(to right, #000 82%, transparent 100%);
    mask-image: linear-gradient(to right, #000 82%, transparent 100%);
  }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }

  /* comparison table → stacked, rule-separated groups */
  .compare, .compare tbody, .compare tr, .compare th, .compare td { display: block; }
  .compare thead { display: none; }
  .compare tbody tr { border-top: 1px solid var(--line); padding: 22px 0 8px; }
  .compare tbody th { width: auto; color: var(--signal-deep); padding: 0 0 10px; border: none; }
  .compare td { border: none; padding: 0 0 14px; }
  .compare td::before {
    content: attr(data-col); display: block;
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--fg-faint); margin-bottom: 4px;
  }
  .compare td.us { padding-left: 16px; border-radius: 4px; padding-top: 8px; padding-bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html, .tech-tabs { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  h2[data-split] .ln > span { transform: none; }
}