/* ══════════════════════════════════════════════════════
   QUORION — v7
   White. Black. Sparse. Exact. Institutional.
   One continuous document. No dark inversions.
   ══════════════════════════════════════════════════════ */

:root {
  --white:        #FFFFFF;
  --surface:      #F5F4F2;
  --surface-md:   #EEECE9;

  --text-primary:   #111110;
  --text-body:      #3A3936;
  --text-secondary: #767470;
  --text-muted:     #A5A29B;

  --border-light:   #E4E3DF;
  --border-mid:     #C9C7C1;

  --font-sans: 'Inter', -apple-system, 'Helvetica Neue', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Menlo', monospace;

  --section-gap:    5.5rem;
  --container-max:  1160px;
  --container-narrow: 740px;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--text-body);
  line-height: 1.7;
  overflow-x: hidden;
}
::selection { background: var(--text-primary); color: var(--white); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ─── LAYOUT ─── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
}
.container--narrow { max-width: var(--container-narrow); }

/* ─── TYPOGRAPHY ─── */
/* Labels: mono, sparse — used very selectively */
.label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.25rem;
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.heading-xl { font-size: clamp(2.6rem, 5vw, 4rem); }
.heading-lg { font-size: clamp(1.9rem, 3.2vw, 2.6rem); }
.heading-md { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.heading-sm { font-size: 1.15rem; font-weight: 400; }

p { color: var(--text-body); font-size: 0.94rem; line-height: 1.8; }

.lead {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--text-body);
  line-height: 1.75;
}

.prose p + p { margin-top: 1rem; }

/* ─── SECTIONS ─── */
.section {
  padding: var(--section-gap) 0;
  border-top: 1px solid var(--border-light);
}
.section--surface { background: var(--surface); }
.section--surface-md { background: var(--surface-md); }
.section:first-child { border-top: none; }

/* ─── NAV ─── */
/* Clean white bar. No blur effect. Document header, not app shell. */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  height: 60px;
  display: flex;
  align-items: center;
}
.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}
.nav__logo {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  flex-shrink: 0;
  margin-right: 2.5rem;
}
.nav__links {
  display: flex;
  align-items: center;
  flex: 1;
}
.nav__link {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 0 0.9rem;
  height: 60px;
  display: flex;
  align-items: center;
  transition: color 0.15s;
  letter-spacing: 0;
}
.nav__link:hover,
.nav__link.is-active {
  color: var(--text-primary);
}
.nav__cta {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-primary);
  border: 1px solid var(--border-mid);
  padding: 0.45rem 1.1rem;
  transition: all 0.15s;
  flex-shrink: 0;
  letter-spacing: 0;
}
.nav__cta:hover {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--white);
}
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  margin-left: auto;
}
.nav__toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all 0.25s;
}

/* ─── HERO ─── */
.hero {
  padding: 9.5rem 0 6.5rem;
  border-bottom: 1px solid var(--border-light);
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.025em;
  max-width: 800px;
  margin-bottom: 1.5rem;
}
.hero__sub {
  font-size: 0.97rem;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 2.25rem;
}
.hero__actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}
.hero__secondary {
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: color 0.15s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.hero__secondary:hover { color: var(--text-primary); }

/* Page heroes */
.page-hero {
  padding: 7.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border-light);
}
.page-hero .label { margin-bottom: 0.75rem; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn--primary {
  padding: 0.8rem 1.6rem;
  background: var(--text-primary);
  color: var(--white);
  border: 1px solid var(--text-primary);
}
.btn--primary:hover {
  background: var(--text-body);
  border-color: var(--text-body);
}
.btn--outline {
  padding: 0.8rem 1.6rem;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-mid);
}
.btn--outline:hover { border-color: var(--text-primary); }
.btn--ghost {
  padding: 0;
  background: none;
  color: var(--text-secondary);
  border: none;
  font-size: 0.82rem;
}
.btn--ghost:hover { color: var(--text-primary); }
.arrow { font-style: normal; }

/* ─── DATA STRIP ─── */
.data-strip {
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  background: var(--surface);
  padding: 2.25rem 0;
}
.data-strip__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
}
.data-strip__item {
  flex: 1;
  padding: 0 1.75rem;
  border-right: 1px solid var(--border-light);
}
.data-strip__item:first-child { padding-left: 0; }
.data-strip__item:last-child { border-right: none; }
.data-strip__value {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.data-strip__label {
  font-size: 0.78rem;
  color: var(--text-body);
  margin-top: 0.2rem;
  font-weight: 400;
}
.data-strip__note {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-top: 0.15rem;
  text-transform: uppercase;
}

/* ─── SPLIT LAYOUT ─── */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.split--wide-left  { grid-template-columns: 1.1fr 0.9fr; }
.split--wide-right { grid-template-columns: 0.9fr 1.1fr; }

/* ─── GRIDS ─── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0; border: 1px solid var(--border-light); }

/* ─── ROUTES ─── */
.routes { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border-light); margin-top: 3rem; }
.route { padding: 2.25rem; border-right: 1px solid var(--border-light); }
.route:last-child { border-right: none; }
.route__num {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.route__title { font-size: 1.15rem; font-weight: 500; color: var(--text-primary); letter-spacing: -0.01em; margin-bottom: 0.9rem; }
.route__desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 1.4rem; }
.route__items { margin-bottom: 1.5rem; }
.route__item {
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 0.55rem 0;
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: 0.65rem;
}
.route__item::before { content: '—'; color: var(--text-muted); flex-shrink: 0; }

/* ─── ARCHITECTURE ─── */
.architecture { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border-light); margin-top: 3rem; }
.arch-panel { padding: 2.25rem; border-right: 1px solid var(--border-light); }
.arch-panel:last-child { border-right: none; }
.arch-panel--surface { background: var(--surface); }
.arch-label { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.4rem; }
.arch-title { font-size: 1.3rem; font-weight: 400; color: var(--text-primary); margin-bottom: 0.9rem; }

/* ─── CALLOUT ─── */
.callout { border-left: 2px solid var(--border-mid); padding: 0.9rem 1.4rem; background: var(--surface); }
.callout p { font-size: 0.9rem; color: var(--text-body); font-weight: 400; line-height: 1.7; font-style: italic; }

/* ─── PROOF STRIP — light version ─── */
/* No dark slab. Same data, same authority, on white/surface. */
.proof-strip {
  background: var(--surface-md);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 2.25rem 0;
}
.proof-strip__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
}
.proof-strip__item {
  flex: 1;
  padding: 0 1.75rem;
  border-right: 1px solid var(--border-mid);
}
.proof-strip__item:first-child { padding-left: 0; }
.proof-strip__item:last-child { border-right: none; }
.proof-strip__value {
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.proof-strip__label { font-size: 0.78rem; color: var(--text-body); margin-top: 0.2rem; }
.proof-strip__note {
  font-family: var(--font-mono);
  font-size: 0.54rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.15rem;
}

/* ─── SIGNAL MODULES ─── */
.signal-modules { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border-light); }
.signal-module { padding: 1.65rem 1.9rem; border-right: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.signal-module:nth-child(2n) { border-right: none; }
.signal-module:nth-last-child(-n+2) { border-bottom: none; }
.signal-module__label { font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.4rem; }
.signal-module__title { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); margin-bottom: 0.45rem; letter-spacing: -0.01em; }
.signal-module__text { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; }

/* ─── SECTOR BLOCK ─── */
.sector-block { padding: 2.5rem 0; }
.sector-name {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}
.sector-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border-light); }
.sector-facet { padding: 1.4rem 1.65rem; border-right: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.sector-facet:nth-child(2n) { border-right: none; }
.sector-facet--decision { grid-column: 1 / -1; border-right: none; border-bottom: none; background: var(--surface); }
.sector-facet-label { font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.4rem; }
.sector-facet-text { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.75; }

/* ─── VIGNETTES ─── */
.vignette { border: 1px solid var(--border-light); }
.vignette__header { padding: 1.25rem 1.9rem; border-bottom: 1px solid var(--border-light); background: var(--surface); }
.vignette__sector { font-family: var(--font-mono); font-size: 0.57rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }
.vignette__row { display: grid; grid-template-columns: 130px 1fr; border-bottom: 1px solid var(--border-light); }
.vignette__row:last-child { border-bottom: none; }
.vignette__row-label {
  padding: 1.4rem 1.9rem;
  border-right: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: flex-start;
  padding-top: 1.65rem;
}
.vignette__row-text { padding: 1.4rem 1.9rem; font-size: 0.87rem; color: var(--text-body); line-height: 1.8; }
.vignette__outcome { background: var(--surface); }

/* ─── INSIGHTS / CONTENT ─── */
.insight-type { font-family: var(--font-mono); font-size: 0.57rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.6rem; }
.insight-meta { font-family: var(--font-mono); font-size: 0.57rem; letter-spacing: 0.08em; color: var(--text-muted); margin-top: 1.5rem; }
.grid-card { padding: 1.9rem; border-right: 1px solid var(--border-light); }
.grid-card:last-child { border-right: none; }
.card-label { font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.6rem; }
.card-title { font-size: 0.92rem; font-weight: 500; color: var(--text-primary); margin-bottom: 0.6rem; line-height: 1.4; letter-spacing: -0.01em; }
.card-text { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.75; }

/* ─── ENGAGEMENT CARDS ─── */
.engagement-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border-light); }
.engagement-card { padding: 1.9rem 2.1rem; border-right: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.engagement-card:nth-child(2n) { border-right: none; }
.engagement-card:nth-last-child(-n+2) { border-bottom: none; }
.engagement-sector { font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.4rem; }
.engagement-title { font-size: 0.92rem; font-weight: 500; color: var(--text-primary); margin-bottom: 0.55rem; letter-spacing: -0.01em; }
.engagement-text { font-size: 0.83rem; color: var(--text-secondary); line-height: 1.75; }

/* ─── MILESTONES ─── */
.milestones { border: 1px solid var(--border-light); }
.milestone { display: flex; justify-content: space-between; align-items: baseline; padding: 1rem 1.65rem; border-bottom: 1px solid var(--border-light); gap: 2rem; }
.milestone:last-child { border-bottom: none; }
.milestone:nth-child(even) { background: var(--surface); }
.milestone__text { font-size: 0.85rem; color: var(--text-body); }
.milestone__tag { font-family: var(--font-mono); font-size: 0.53rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }

/* ─── FORM ─── */
.form-container { border: 1px solid var(--border-light); padding: 2.25rem; background: var(--white); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.3rem; }
.form-group + .form-group { margin-top: 1.25rem; }
.form-label { font-family: var(--font-mono); font-size: 0.57rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-secondary); }
.form-input, .form-select, .form-textarea {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-primary);
  background: var(--white);
  border: 1px solid var(--border-mid);
  padding: 0.7rem 0.9rem;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--text-primary); }
.form-textarea { resize: vertical; min-height: 105px; line-height: 1.7; }
.form-radio-group { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 0.3rem; }
.form-radio-label { display: flex; align-items: center; gap: 0.7rem; cursor: pointer; font-size: 0.86rem; color: var(--text-body); }
.form-radio-label input { display: none; }
.form-radio-indicator { width: 13px; height: 13px; border: 1px solid var(--border-mid); border-radius: 50%; flex-shrink: 0; transition: all 0.15s; }
.form-radio-label input:checked + span + .form-radio-indicator { border-color: var(--text-primary); background: var(--text-primary); }
.form-note { font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); margin-top: 1rem; letter-spacing: 0.05em; line-height: 1.6; }
.form-submit {
  width: 100%;
  padding: 0.9rem;
  background: var(--text-primary);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  letter-spacing: 0;
}
.form-submit:hover { background: var(--text-body); }

/* ─── NOT-LIST ─── */
.not-list { display: flex; flex-direction: column; }
.not-item {
  font-size: 0.87rem;
  color: var(--text-secondary);
  padding: 0.8rem 0 0.8rem 1.2rem;
  border-bottom: 1px solid var(--border-light);
  position: relative;
  line-height: 1.6;
}
.not-item:last-child { border-bottom: none; }
.not-item::before { content: '—'; position: absolute; left: 0; color: var(--text-muted); }

/* ─── VECTOR ─── */
.vector-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--border-light); margin-top: 2rem; }
.vector-item { padding: 1.65rem; border-right: 1px solid var(--border-light); }
.vector-item:nth-child(3n) { border-right: none; }
.vector-item:nth-last-child(-n+3) { border-top: 1px solid var(--border-light); }
.vector-item:nth-child(-n+3) { border-top: none; }
.vector-num { font-family: var(--font-mono); font-size: 0.54rem; letter-spacing: 0.12em; color: var(--text-muted); margin-bottom: 0.4rem; text-transform: uppercase; }
.vector-title { font-size: 0.87rem; font-weight: 500; color: var(--text-primary); margin-bottom: 0.45rem; }
.vector-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; }

/* ─── SECTION HEADER ─── */
.section-header { margin-bottom: 2.75rem; }
.section-header--center { text-align: center; }
.section-header--center .lead { margin: 0.75rem auto 0; }
.section-header--split {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 3rem;
}
.section-header--split .lead { max-width: 380px; }

/* ─── FOOTER — light, continuous with body ─── */
/* Not a dark slab. One document end. */
.footer {
  padding: 2.75rem 0;
  border-top: 1px solid var(--border-light);
  background: var(--surface);
}
.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.footer__brand {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.footer__links { display: flex; gap: 1.75rem; flex-wrap: wrap; flex: 1; }
.footer__links a { font-size: 0.78rem; color: var(--text-secondary); transition: color 0.15s; }
.footer__links a:hover { color: var(--text-primary); }
.footer__copy { font-family: var(--font-mono); font-size: 0.54rem; color: var(--text-muted); letter-spacing: 0.06em; margin-left: auto; }

/* ─── SCROLL REVEAL ─── */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: 0.1s; }
.reveal--d2 { transition-delay: 0.2s; }
.reveal--d3 { transition-delay: 0.3s; }

/* ─── THANK YOU PAGE ─── */
.thanks-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.thanks-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 8rem 0 6rem;
}

/* ─── MOBILE ─── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    padding: 0.5rem 0 1rem;
    z-index: 99;
  }
  .nav__links.is-open .nav__link {
    height: 44px;
    padding: 0 2rem;
    border-bottom: none;
    margin: 0;
  }
  .nav__links.is-open .nav__cta-mobile {
    display: flex;
    margin: 0.25rem 2rem 0.25rem;
  }

  .split, .split--wide-left, .split--wide-right { grid-template-columns: 1fr; gap: 2.25rem; }
  .grid-2 { grid-template-columns: 1fr; gap: 2rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-3 .grid-card { border-right: none; border-bottom: 1px solid var(--border-light); }
  .grid-3 .grid-card:last-child { border-bottom: none; }
  .routes { grid-template-columns: 1fr; }
  .route { border-right: none; border-bottom: 1px solid var(--border-light); }
  .route:last-child { border-bottom: none; }
  .architecture { grid-template-columns: 1fr; }
  .arch-panel { border-right: none; border-bottom: 1px solid var(--border-light); }
  .arch-panel:last-child { border-bottom: none; }
  .sector-grid { grid-template-columns: 1fr; }
  .sector-facet { border-right: none; }
  .sector-facet--decision { grid-column: 1; }
  .signal-modules { grid-template-columns: 1fr; }
  .signal-module { border-right: none; }
  .signal-module:nth-last-child(-n+2) { border-bottom: 1px solid var(--border-light); }
  .signal-module:last-child { border-bottom: none; }
  .vector-grid { grid-template-columns: 1fr 1fr; }
  .vector-item:nth-child(2n) { border-right: none; }
  .vector-item:nth-child(3n) { border-right: 1px solid var(--border-light); }
  .engagement-grid { grid-template-columns: 1fr; }
  .engagement-card { border-right: none; }
  .engagement-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--border-light); }
  .engagement-card:last-child { border-bottom: none; }
  .vignette__row { grid-template-columns: 95px 1fr; }
  .data-strip__inner { flex-direction: column; gap: 1.1rem; }
  .data-strip__item { padding: 0; border-right: none; border-bottom: 1px solid var(--border-light); padding-bottom: 1.1rem; }
  .data-strip__item:last-child { border-bottom: none; padding-bottom: 0; }
  .proof-strip__inner { flex-direction: column; gap: 1.1rem; }
  .proof-strip__item { padding: 0; border-right: none; border-bottom: 1px solid var(--border-mid); padding-bottom: 1.1rem; }
  .proof-strip__item:last-child { border-bottom: none; padding-bottom: 0; }
  .footer__inner { flex-direction: column; align-items: flex-start; gap: 1.25rem; }
  .footer__copy { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .section-header--split { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .hero__title { font-size: clamp(2rem, 8vw, 2.8rem); }
  :root { --section-gap: 3.75rem; }
  .hero { padding: 7rem 0 4.5rem; }
  .page-hero { padding: 6rem 0 3.25rem; }
}
@media (max-width: 500px) {
  .container { padding: 0 1.25rem; }
  .vector-grid { grid-template-columns: 1fr; }
}