:root {
  --bg: #0b0f14;
  --bg-elev: #111720;
  --bg-soft: #151d27;
  --text: #f3f4f6;
  --muted: #9ca7b5;
  --line: #293341;
  --line-strong: #3b4654;
  --accent: #8fd3ff;
  --accent-2: #d6f2ff;
  --warm: #f0c98d;
  --max: 1180px;
  --radius: 18px;
  --shadow: 0 24px 80px rgba(0,0,0,.26);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    var(--bg);
  background-size: 44px 44px;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 0%, rgba(143,211,255,.07), transparent 34rem),
    radial-gradient(circle at 92% 38%, rgba(240,201,141,.045), transparent 30rem);
  z-index: -1;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(11,15,20,.82);
  border-bottom: 1px solid rgba(255,255,255,.055);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  letter-spacing: .12em;
  font-size: 14px;
  font-weight: 760;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--accent-2);
  background: linear-gradient(145deg, #121a23, #0b0f14);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a { transition: color .18s ease; }
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--text); }

.nav-cta,
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(255,255,255,.03);
  color: var(--text);
  font-size: 14px;
  font-weight: 680;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.nav-cta:hover,
.button:hover {
  transform: translateY(-1px);
  border-color: #566373;
  background: rgba(255,255,255,.055);
}

.button.primary {
  background: var(--text);
  color: #0d1117;
  border-color: var(--text);
}

.button.primary:hover { background: #fff; }

.menu-button {
  display: none;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 8px;
}

.hero {
  min-height: 710px;
  display: grid;
  align-items: center;
  padding: 92px 0 76px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, .75fr);
  gap: 72px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--accent-2);
  font: 650 12px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

h1, h2, h3 {
  margin: 0;
  letter-spacing: -.035em;
  line-height: 1.05;
}

h1 {
  max-width: 900px;
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 760;
}

h2 {
  font-size: clamp(34px, 4.5vw, 58px);
  font-weight: 735;
}

h3 {
  font-size: 21px;
  font-weight: 690;
}

.lede {
  max-width: 760px;
  margin: 28px 0 0;
  color: #b5bfca;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-note {
  margin-top: 18px;
  color: #7f8b99;
  font-size: 13px;
}

.system-card {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17,23,32,.78);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.system-card::after {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  right: -70px;
  top: -70px;
  border-radius: 50%;
  background: rgba(143,211,255,.075);
  filter: blur(2px);
}

.system-title {
  font: 650 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #8e9aa8;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 20px;
}

.architecture {
  display: grid;
  gap: 12px;
}

.arch-row {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 14px;
  align-items: center;
  min-height: 62px;
  padding: 10px 13px;
  border: 1px solid #26313e;
  border-radius: 12px;
  background: #0e141b;
}

.arch-index {
  font: 600 11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--accent);
}

.arch-copy strong {
  display: block;
  font-size: 14px;
  letter-spacing: -.01em;
}

.arch-copy span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: #7f8b99;
}

.signal {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #93d7bd;
  box-shadow: 0 0 0 5px rgba(147,215,189,.07);
}

.arch-connector {
  height: 16px;
  margin-left: 33px;
  border-left: 1px dashed #334252;
}

.section {
  padding: 110px 0;
  border-bottom: 1px solid var(--line);
}

.section.tight { padding: 82px 0; }

.section-header {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 54px;
}

.section-header p,
.copy {
  margin: 0;
  color: #a5b0bc;
  font-size: 17px;
  max-width: 720px;
}

.kicker {
  margin-bottom: 14px;
  color: #7f8b99;
  font: 650 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability {
  padding: 38px;
  min-height: 260px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(11,15,20,.38);
}

.capability-number {
  margin-bottom: 58px;
  color: #607083;
  font: 600 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.capability p {
  margin: 15px 0 0;
  color: #8f9baa;
  max-width: 470px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.tag,
.status {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 9px;
  border: 1px solid #2c3948;
  border-radius: 999px;
  color: #9dabb9;
  font: 580 11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.status {
  color: var(--warm);
  border-color: rgba(240,201,141,.25);
  background: rgba(240,201,141,.055);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 74px;
  align-items: start;
}

.list {
  display: grid;
  margin: 30px 0 0;
  border-top: 1px solid var(--line);
}

.list-item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.list-index {
  color: #647286;
  font: 600 11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding-top: 5px;
}

.list-item strong {
  display: block;
  font-size: 15px;
}

.list-item span {
  display: block;
  margin-top: 5px;
  color: #8f9baa;
  font-size: 14px;
}

.callout {
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(143,211,255,.04), rgba(255,255,255,.016));
}

.callout h3 { font-size: 28px; }
.callout p { margin: 18px 0 0; color: #9da9b6; }
.callout .button { margin-top: 26px; }

.dx-teaser {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 70px;
  padding: 58px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    radial-gradient(circle at 90% 10%, rgba(143,211,255,.08), transparent 28rem),
    #101720;
  overflow: hidden;
}

.dx-logo {
  font: 760 clamp(88px, 13vw, 170px)/.85 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: -.08em;
  color: #eaf7ff;
}

.dx-teaser-copy .status { margin-bottom: 22px; }
.dx-teaser-copy h2 { font-size: clamp(38px, 5vw, 62px); }
.dx-teaser-copy p { color: #a6b1bd; margin: 22px 0 0; font-size: 17px; }
.dx-teaser-copy .button { margin-top: 28px; }

.article-row {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.article-row:last-child { border-bottom: 1px solid var(--line); }

.article-meta {
  color: #6f7d8d;
  font: 600 11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.article-row h3 {
  font-size: 19px;
  line-height: 1.3;
}

.article-row p {
  margin: 7px 0 0;
  color: #8794a2;
  font-size: 14px;
}

.article-arrow {
  font-size: 22px;
  color: #758397;
}

.cta-band {
  padding: 82px 0;
}

.cta-panel {
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 50px;
  align-items: center;
  padding: 48px 52px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--bg-elev);
}

.cta-panel p {
  margin: 16px 0 0;
  color: #93a0ad;
  max-width: 700px;
}

.cta-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.site-footer {
  padding: 42px 0 60px;
  color: #7d8997;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}

.footer-brand {
  color: #dce3ea;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .11em;
}

.footer-copy {
  max-width: 580px;
  margin-top: 10px;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 13px;
}

/* Interior pages */

.page-hero {
  padding: 120px 0 92px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-size: clamp(48px, 7vw, 82px);
}

.page-hero .lede {
  max-width: 800px;
}

.page-hero-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
}

.dx-hero {
  min-height: 640px;
  display: grid;
  align-items: center;
}

.dx-display {
  margin-top: 46px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 14px;
}

.dx-node {
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #0f151d;
}

.dx-node small {
  color: #637285;
  font: 600 10px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.dx-node strong {
  display: block;
  margin-top: 28px;
  font-size: 17px;
}

.dx-node span {
  display: block;
  margin-top: 7px;
  color: #8592a1;
  font-size: 13px;
}

.dx-arrow {
  align-self: center;
  color: #4f6073;
  font-size: 22px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.principle {
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.016);
}

.principle .capability-number { margin-bottom: 46px; }
.principle p { color: #8794a2; font-size: 14px; margin-top: 12px; }

.blog-empty {
  padding: 54px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.015);
}

.blog-empty p {
  color: #8d99a7;
  max-width: 620px;
  margin: 16px 0 0;
}

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.editorial-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 175px;
}

.editorial-card p {
  color: #84919f;
  font-size: 14px;
  margin: 12px 0 0;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-top: 44px;
}

.about-stat {
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-stat strong {
  display: block;
  font-size: 16px;
}

.about-stat span {
  display: block;
  color: #7f8c9a;
  font-size: 13px;
  margin-top: 6px;
}

.contact-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.contact-card {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-elev);
}

.contact-card .email {
  display: inline-block;
  margin-top: 24px;
  color: var(--accent-2);
  font: 650 16px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.brief {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  margin-top: 28px;
}

.brief-row {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.brief-row strong { font-size: 14px; }
.brief-row span {
  display: block;
  margin-top: 4px;
  color: #7f8b99;
  font-size: 13px;
}

.not-found {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.not-found h1 { font-size: 110px; }
.not-found p { color: #8794a2; }

@media (max-width: 900px) {
  .nav-links {
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #0e141b;
    box-shadow: var(--shadow);
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
  .nav-links .nav-cta { margin-top: 8px; }
  .menu-button { display: block; }

  .hero { min-height: auto; padding-top: 78px; }
  .hero-grid,
  .section-header,
  .split,
  .dx-teaser,
  .cta-panel,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid { gap: 46px; }
  .section-header { gap: 22px; }
  .section-header p { max-width: 760px; }
  .dx-teaser { gap: 38px; }
  .cta-actions { justify-content: flex-start; }
  .dx-display {
    grid-template-columns: 1fr;
  }
  .dx-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .principles { grid-template-columns: 1fr; }
  .page-hero-row { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .hero, .section { padding-top: 76px; padding-bottom: 76px; }
  h1 { font-size: 48px; }
  h2 { font-size: 36px; }
  .capability-grid,
  .editorial-grid,
  .about-stats { grid-template-columns: 1fr; }
  .capability { padding: 28px; min-height: 230px; }
  .capability-number { margin-bottom: 38px; }
  .dx-teaser { padding: 30px; }
  .dx-logo { font-size: 96px; }
  .article-row { grid-template-columns: 1fr auto; gap: 14px; }
  .article-meta { grid-column: 1 / -1; }
  .cta-panel { padding: 34px 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  .page-hero { padding: 84px 0 70px; }
  .blog-empty { padding: 30px; }
}