:root {
  --navy: #061a34;
  --navy-soft: #0b2e58;
  --blue: #0d4a84;
  --teal: #06a8a6;
  --teal-light: #80d9d5;
  --ink: #10233a;
  --muted: #5d6b78;
  --line: #d9e1e8;
  --mist: #f3f7f8;
  --white: #ffffff;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Manrope", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.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;
}
.skip-link {
  position: fixed;
  z-index: 100;
  left: 1rem;
  top: 1rem;
  transform: translateY(-180%);
  padding: .7rem 1rem;
  background: var(--white);
  color: var(--navy);
  border-radius: .25rem;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1200px, calc(100% - 3rem));
  height: 88px;
  margin: 0 auto;
  border-bottom: 1px solid rgba(255,255,255,.18);
  color: var(--white);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
}
.brand-logo {
  position: relative;
  display: block;
  width: 47px;
  height: 43px;
  overflow: hidden;
  background: var(--white);
}
.brand-logo img {
  position: absolute;
  width: 154px;
  max-width: none;
  left: -5px;
  top: -15px;
}
.brand-word {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: .22em;
  line-height: 1;
}
.brand-word::after {
  content: "GLOBAL SYSTEMS, INC.";
  display: block;
  margin-top: .38rem;
  color: rgba(255,255,255,.62);
  font-size: .48rem;
  font-weight: 650;
  letter-spacing: .16em;
  white-space: nowrap;
}
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  font-size: .82rem;
  font-weight: 650;
  letter-spacing: .04em;
  text-decoration: none;
  opacity: .78;
  transition: opacity .2s ease, color .2s ease;
}
.site-nav a:hover, .site-nav a:focus-visible { opacity: 1; color: var(--teal-light); }
.site-nav a[aria-current="page"] { opacity: 1; color: var(--teal-light); }
.site-nav .nav-contact {
  padding: .6rem .9rem;
  border: 1px solid rgba(255,255,255,.4);
  opacity: 1;
}
.menu-button { display: none; }

.hero {
  position: relative;
  min-height: 780px;
  padding: 10rem 1.5rem 0;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 83% 22%, rgba(5,168,166,.2), transparent 26rem),
    linear-gradient(120deg, #04152a 0%, #08294d 58%, #073656 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .34;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.hero::after {
  content: "";
  position: absolute;
  width: 580px;
  height: 580px;
  border: 1px solid rgba(117,217,213,.18);
  border-radius: 50%;
  right: -220px;
  top: 50px;
  box-shadow: 0 0 0 90px rgba(117,217,213,.035), 0 0 0 180px rgba(117,217,213,.025);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
  width: min(1200px, 100%);
  margin: 0 auto;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: 0 0 1.3rem;
  color: var(--blue);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow span { width: 28px; height: 2px; background: var(--teal); }
.hero .eyebrow { color: var(--teal-light); }
.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(3.2rem, 6.3vw, 6.1rem);
  line-height: .98;
  letter-spacing: -.055em;
  font-weight: 760;
}
.hero h1 em {
  display: block;
  color: var(--teal-light);
  font-family: var(--serif);
  font-weight: 500;
}
.hero-lede {
  max-width: 660px;
  margin: 2rem 0 0;
  color: rgba(255,255,255,.75);
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 50px;
  padding: .8rem 1.15rem;
  border: 1px solid transparent;
  font-size: .85rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { background: var(--teal); color: #021b27; }
.button-primary:hover { background: var(--teal-light); }
.button-quiet { border-color: rgba(255,255,255,.38); color: var(--white); }
.button-quiet:hover { border-color: var(--white); background: rgba(255,255,255,.06); }

.transition-card {
  position: relative;
  min-height: 460px;
  padding: 1.2rem;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(2,16,32,.44);
  box-shadow: 0 30px 80px rgba(0,0,0,.22);
  backdrop-filter: blur(9px);
}
.transition-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 .1rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.12);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.58);
}
.status { display: flex; align-items: center; gap: .4rem; letter-spacing: .04em; text-transform: none; }
.status i { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-light); box-shadow: 0 0 10px var(--teal-light); }
.transition-map { position: relative; min-height: 335px; }
.map-line {
  position: absolute;
  left: 12%;
  bottom: 20%;
  width: 75%;
  height: 60%;
  border-top: 1px solid rgba(128,217,213,.55);
  transform: skewY(-24deg);
}
.map-node {
  position: absolute;
  width: 118px;
  padding: .85rem;
  border-left: 2px solid var(--teal);
  background: rgba(8,46,81,.86);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.map-node span { display: block; color: var(--teal-light); font-size: .62rem; font-weight: 800; }
.map-node strong { display: block; margin-top: .2rem; font-size: .86rem; }
.map-node small { display: block; margin-top: .2rem; color: rgba(255,255,255,.55); font-size: .65rem; }
.node-one { left: 3%; bottom: 5%; }
.node-two { left: 29%; bottom: 28%; }
.node-three { right: 25%; top: 23%; }
.node-four { right: 0; top: 2%; }
.vector-arrow { position: absolute; right: 0; top: 36%; color: var(--teal-light); font-size: 3.4rem; font-weight: 200; }
.transition-note { margin: 0; padding-top: .8rem; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.57); font-size: .72rem; }
.signal-strip {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.8rem);
  width: min(1200px, 100%);
  height: 100px;
  margin: 4.5rem auto 0;
  border-top: 1px solid rgba(255,255,255,.16);
  color: rgba(255,255,255,.58);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.signal-strip i { width: 4px; height: 4px; border-radius: 50%; background: var(--teal); }

.section { padding: 8rem 1.5rem; }
.section-heading { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 7vw, 7rem); width: min(1200px, 100%); margin: 0 auto 4.5rem; align-items: end; }
.section h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.25rem, 4.6vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.045em;
}
.section-heading > p, .capability-heading > p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.approach-grid { display: grid; grid-template-columns: repeat(4, 1fr); width: min(1200px, 100%); margin: 0 auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.approach-card { min-height: 300px; padding: 2rem 1.5rem; border-right: 1px solid var(--line); transition: background .25s ease, transform .25s ease; }
.approach-card:first-child { border-left: 1px solid var(--line); }
.approach-card:hover { background: var(--mist); transform: translateY(-5px); }
.card-number { color: var(--teal); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.approach-card h3 { margin: 5rem 0 1rem; color: var(--navy); font-size: 1.2rem; line-height: 1.3; }
.approach-card p { margin: 0; color: var(--muted); font-size: .9rem; }

.vector-section { color: var(--white); background: var(--navy); }
.vector-shell { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(3rem, 8vw, 8rem); width: min(1200px, 100%); margin: 0 auto; }
.product-label { margin: 0 0 1.5rem; color: var(--teal-light); font-size: .68rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.product-label span { display: inline-block; margin-left: .8rem; padding: .3rem .5rem; border: 1px solid rgba(128,217,213,.35); }
.vector-intro h2 { color: var(--white); font-size: clamp(2.5rem, 4.5vw, 4.1rem); }
.vector-intro > p:last-child { margin: 2rem 0 0; color: rgba(255,255,255,.62); }
.vector-principles { border-top: 1px solid rgba(255,255,255,.2); }
.vector-principles article { display: grid; grid-template-columns: .7fr 1.3fr; gap: 2rem; padding: 1.5rem 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.vector-principles span { color: var(--teal-light); font-weight: 700; }
.vector-principles p { margin: 0; color: rgba(255,255,255,.6); font-size: .9rem; }

.capabilities { background: var(--mist); }
.capability-heading { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 7vw, 7rem); width: min(1200px, 100%); margin: 0 auto 4rem; align-items: end; }
.capability-list { width: min(1200px, 100%); margin: 0 auto; border-top: 1px solid #cdd7de; }
.capability-row { display: grid; grid-template-columns: 70px .85fr 1.15fr; gap: 2rem; align-items: start; padding: 2rem 0; border-bottom: 1px solid #cdd7de; }
.cap-index { color: var(--teal); font-size: .72rem; font-weight: 800; }
.capability-row h3 { margin: 0; color: var(--navy); font-size: 1.15rem; line-height: 1.35; }
.capability-row p { margin: 0; color: var(--muted); font-size: .92rem; }

.conviction { position: relative; display: grid; grid-template-columns: .7fr 1.3fr; gap: 4rem; align-items: center; width: min(1200px, calc(100% - 3rem)); margin: 0 auto; padding-left: 0; padding-right: 0; overflow: hidden; }
.conviction-mark { color: #eef4f5; font-size: min(32vw, 28rem); font-weight: 800; line-height: .72; letter-spacing: -.14em; user-select: none; }
.conviction blockquote { margin: 0; position: relative; z-index: 1; }
.conviction blockquote p { margin: 0; color: var(--navy); font-family: var(--serif); font-size: clamp(1.65rem, 3vw, 2.8rem); line-height: 1.25; }
.conviction cite { display: block; margin-top: 1.5rem; color: var(--teal); font-family: var(--sans); font-size: .75rem; font-style: normal; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.contact-section { position: relative; overflow: hidden; padding: 7rem 1.5rem; color: var(--white); background: linear-gradient(112deg, #075f76 0%, #078c91 45%, #05aaa5 100%); }
.contact-section::after { content: "↗"; position: absolute; right: 5%; top: -38%; color: rgba(255,255,255,.08); font-size: 34rem; font-weight: 200; line-height: 1; }
.contact-inner { position: relative; z-index: 1; width: min(900px, 100%); margin: 0 auto; text-align: center; }
.eyebrow.light { justify-content: center; color: rgba(255,255,255,.72); }
.eyebrow.light span { background: var(--white); }
.contact-inner h2 { margin: 0; color: var(--white); font-size: clamp(2.5rem, 5vw, 4.8rem); line-height: 1.02; letter-spacing: -.05em; }
.contact-inner > p { color: rgba(255,255,255,.78); }
.button-light { margin-top: 1.7rem; background: var(--white); color: var(--navy); }
.button-light:hover { background: #e9ffff; }

footer { display: grid; grid-template-columns: auto 1fr 1.6fr auto; gap: 2rem; align-items: center; padding: 2rem max(1.5rem, calc((100vw - 1200px) / 2)); color: rgba(255,255,255,.55); background: #031225; font-size: .7rem; }
footer p { margin: 0; }
.footer-brand { color: var(--white); font-size: 1rem; font-weight: 800; letter-spacing: .18em; text-decoration: none; }

/* Multi-page experience */
.page-hero {
  position: relative;
  min-height: 610px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 10rem 1.5rem 6rem;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 30%, rgba(5,168,166,.18), transparent 28rem),
    linear-gradient(120deg, #04152a 0%, #08294d 60%, #073656 100%);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .32;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
}
.page-hero-inner {
  position: relative;
  z-index: 1;
  width: min(1200px, 100%);
  margin: 0 auto;
}
.page-hero .eyebrow { color: var(--teal-light); }
.page-hero h1 {
  max-width: 970px;
  margin: 0;
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: .98;
  letter-spacing: -.055em;
}
.page-hero-inner > p:last-child {
  max-width: 760px;
  margin: 2rem 0 0;
  color: rgba(255,255,255,.7);
  font-size: 1.08rem;
}
.page-number {
  position: absolute;
  right: max(1.5rem, calc((100vw - 1200px) / 2));
  bottom: 2rem;
  color: rgba(255,255,255,.07);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 800;
  line-height: .7;
  letter-spacing: -.1em;
}
.home-intro { background: var(--white); }
.journey-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1200px, 100%);
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.journey-link {
  position: relative;
  min-height: 290px;
  padding: 2rem;
  border-right: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  transition: color .25s ease, background .25s ease, transform .25s ease;
}
.journey-link:first-child { border-left: 1px solid var(--line); }
.journey-link:hover, .journey-link:focus-visible { color: var(--navy); background: var(--mist); transform: translateY(-5px); }
.journey-link > span { color: var(--teal); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.journey-link strong { display: block; margin-top: 4.7rem; color: var(--navy); font-size: 1.2rem; }
.journey-link p { margin: .8rem 0 0; color: var(--muted); font-size: .9rem; }
.journey-link i { position: absolute; top: 1.6rem; right: 1.7rem; color: var(--teal); font-size: 1.7rem; font-style: normal; }
.compact-contact { padding-top: 6rem; padding-bottom: 6rem; }
.page-conviction { min-height: 570px; }

.system-view { color: var(--white); background: var(--navy); }
.system-view-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(3rem, 8vw, 8rem);
  width: min(1200px, 100%);
  margin: 0 auto;
}
.system-view .eyebrow { color: var(--teal-light); }
.system-view h2 { color: var(--white); }
.system-stack { border-top: 1px solid rgba(255,255,255,.18); }
.system-stack article {
  display: grid;
  grid-template-columns: .65fr 1.35fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.system-stack span { color: var(--teal-light); font-weight: 700; }
.system-stack p { margin: 0; color: rgba(255,255,255,.62); font-size: .9rem; }

.vector-page-hero { min-height: 690px; }
.vector-page-hero h1 { max-width: 1050px; }
.product-window-section {
  width: min(1280px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 7rem 0 8rem;
}
.product-window-copy {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  margin-bottom: 3.5rem;
}
.product-window-copy .eyebrow { grid-column: 1 / -1; margin-bottom: -1rem; }
.product-window-copy h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.5rem, 4.5vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.product-window-copy > p:last-child { margin: 0; color: var(--muted); font-size: 1.05rem; }
.product-window {
  margin: 0;
  overflow: hidden;
  border: 1px solid #cbd5dd;
  background: #0b1f3c;
  box-shadow: 0 30px 80px rgba(6,26,52,.2);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: .45rem;
  height: 42px;
  padding: 0 1rem;
  color: rgba(255,255,255,.55);
  background: #06162d;
}
.window-bar > span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.22); }
.window-bar small { margin-left: .6rem; font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }
.product-window img { display: block; width: 100%; height: auto; }
.product-window figcaption {
  padding: .75rem 1rem;
  color: rgba(255,255,255,.55);
  background: #06162d;
  font-size: .7rem;
}
.vector-details { padding-top: 8rem; padding-bottom: 8rem; }
.audience-section { background: var(--mist); }
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1200px, 100%);
  margin: 0 auto;
  border-top: 1px solid #cdd7de;
  border-bottom: 1px solid #cdd7de;
}
.audience-grid article { min-height: 230px; padding: 2rem; border-right: 1px solid #cdd7de; }
.audience-grid article:first-child { border-left: 1px solid #cdd7de; }
.audience-grid span { color: var(--navy); font-weight: 750; }
.audience-grid p { margin: 3rem 0 0; color: var(--muted); font-size: .9rem; }

.combined-section { background: var(--white); }
.proof-section { color: var(--white); background: var(--navy); }
.proof-heading {
  display: grid;
  grid-template-columns: .9fr 1.3fr .8fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  width: min(1200px, 100%);
  margin: 0 auto 4rem;
}
.proof-heading .eyebrow { color: var(--teal-light); }
.proof-heading h2 { color: var(--white); }
.proof-heading > p:last-child { margin: 0; color: rgba(255,255,255,.55); font-size: .86rem; }
.proof-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  width: min(1200px, 100%);
  margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,.18);
  border-left: 1px solid rgba(255,255,255,.18);
}
.proof-card {
  min-height: 330px;
  padding: 2rem;
  border-right: 1px solid rgba(255,255,255,.18);
  border-bottom: 1px solid rgba(255,255,255,.18);
  background: linear-gradient(145deg, rgba(255,255,255,.035), transparent 65%);
}
.proof-kicker {
  color: var(--teal-light);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.proof-card ul { margin: 3.5rem 0 0; padding: 0; list-style: none; }
.proof-card li {
  position: relative;
  margin-top: 1rem;
  padding-left: 1.4rem;
  color: rgba(255,255,255,.72);
  font-size: .9rem;
}
.proof-card li::before {
  content: "↗";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--teal);
}
.combined-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(3rem, 8vw, 8rem);
  width: min(1200px, 100%);
  margin: 0 auto;
}
.combined-points { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.combined-points article { min-height: 190px; padding: 1.5rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.combined-points strong { color: var(--navy); font-size: .95rem; }
.combined-points p { margin: 1rem 0 0; color: var(--muted); font-size: .85rem; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .75s ease, transform .75s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 900px) {
  .site-header { width: calc(100% - 2rem); }
  .menu-button { display: grid; gap: 5px; padding: .8rem; border: 0; background: transparent; color: var(--white); }
  .menu-button span:not(.sr-only) { display: block; width: 24px; height: 2px; background: currentColor; }
  .site-nav { position: absolute; top: 76px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: .8rem; background: var(--navy); box-shadow: 0 20px 40px rgba(0,0,0,.25); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: .9rem; }
  .site-nav .nav-contact { margin-top: .4rem; }
  .hero { padding-top: 8rem; }
  .hero-grid, .section-heading, .vector-shell, .capability-heading { grid-template-columns: 1fr; }
  .hero-grid { gap: 3.2rem; }
  .transition-card { max-width: 610px; }
  .approach-grid { grid-template-columns: repeat(2, 1fr); }
  .approach-card:nth-child(3) { border-left: 1px solid var(--line); }
  .approach-card:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .capability-row { grid-template-columns: 50px 1fr; }
  .capability-row p { grid-column: 2; }
  .conviction { grid-template-columns: .42fr 1.58fr; }
  footer { grid-template-columns: 1fr 1fr; }
  .journey-links, .audience-grid { grid-template-columns: 1fr; }
  .journey-link, .audience-grid article { min-height: 220px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .journey-link strong { margin-top: 3rem; }
  .system-view-grid, .product-window-copy, .combined-grid { grid-template-columns: 1fr; }
  .proof-heading { grid-template-columns: 1fr; }
  .product-window-section { padding-top: 5rem; padding-bottom: 5rem; }
}

@media (max-width: 600px) {
  .hero { min-height: auto; padding-left: 1rem; padding-right: 1rem; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.3rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .transition-card { min-height: 430px; padding: .85rem; }
  .map-node { width: 104px; padding: .65rem; }
  .node-two { left: 25%; }
  .node-three { right: 20%; }
  .signal-strip { gap: .6rem; margin-top: 3.5rem; font-size: .56rem; letter-spacing: .08em; }
  .signal-strip i { width: 3px; height: 3px; }
  .section { padding: 5rem 1rem; }
  .section-heading { margin-bottom: 2.5rem; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-card { min-height: 220px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .approach-card h3 { margin-top: 3rem; }
  .vector-principles article { grid-template-columns: 1fr; gap: .5rem; }
  .capability-row { grid-template-columns: 38px 1fr; gap: 1rem; }
  .conviction { grid-template-columns: 1fr; width: calc(100% - 2rem); padding-top: 5rem; padding-bottom: 5rem; }
  .conviction-mark { position: absolute; left: -2rem; top: 3rem; font-size: 22rem; }
  .conviction blockquote { padding: 4rem 1rem; }
  .contact-section { padding: 5rem 1rem; }
  .button-light { width: 100%; }
  footer { grid-template-columns: 1fr; gap: .6rem; text-align: center; }
  .brand-word::after { font-size: .42rem; letter-spacing: .1em; }
  .page-hero { min-height: 580px; padding-left: 1rem; padding-right: 1rem; padding-bottom: 4rem; }
  .page-hero h1 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .page-number { display: none; }
  .product-window-section { width: calc(100% - 2rem); }
  .window-bar small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .combined-points { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-card { min-height: auto; }
  .system-stack article { grid-template-columns: 1fr; gap: .5rem; }
}