:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  font-weight: 400;
  color: #172033;
  background: #f4f6f9;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --ink: #172033;
  --muted: #5d6878;
  --line: #dce2e9;
  --surface: #ffffff;
  --surface-soft: #eef2f6;
  --accent: #3968ff;
  --accent-soft: #eaf0ff;
  --dark: #0b1020;
  --dark-soft: #121a2e;
  --success: #2f9b68;
  --shadow: 0 24px 60px rgba(23, 32, 51, 0.08);
}

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

html {
  scroll-behavior: smooth;
  background: #f4f6f9;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% 0%, rgba(57, 104, 255, 0.08), transparent 34rem),
    #f4f6f9;
  color: var(--ink);
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244, 246, 249, 0.88);
  border-bottom: 1px solid rgba(220, 226, 233, 0.9);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.identity {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 760;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.identity-mark {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #83a0ff);
  box-shadow: 0 0 0 5px rgba(57, 104, 255, 0.09);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

nav a {
  color: #4c5768;
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 620;
}

nav a:hover {
  color: var(--ink);
}

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 10vw, 8.5rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 32, 51, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 32, 51, 0.045) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent 92%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
}

.hero-kicker,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  padding: 0.48rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  color: #4d5969;
  font-size: 0.82rem;
  font-weight: 680;
}

.status-dot {
  width: 0.52rem;
  height: 0.52rem;
  border-radius: 999px;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(47, 155, 104, 0.1);
}

h1,
h2,
h3,
p {
  max-width: 72ch;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 12ch;
  margin: 1.35rem 0 1.5rem;
  font-size: clamp(3.4rem, 8.8vw, 6.8rem);
  font-weight: 800;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  font-weight: 760;
}

h3 {
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
}

p {
  margin-top: 0;
}

.hero-copy,
.lead,
.section-intro {
  color: var(--muted);
  font-size: clamp(1.06rem, 1.9vw, 1.32rem);
}

.hero-copy {
  max-width: 55rem;
  margin-bottom: 1.6rem;
}

.capability-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.capability-row span,
.domain-list span {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  border-radius: 999px;
}

.capability-row span {
  padding: 0.52rem 0.78rem;
  color: #4d5969;
  font-size: 0.82rem;
  font-weight: 620;
}

.system-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid #cdd7e2;
  border-radius: 1.35rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.96), rgba(244,247,251,0.96));
  box-shadow: var(--shadow);
}

.system-panel::after {
  content: "";
  position: absolute;
  width: 14rem;
  height: 14rem;
  top: -7rem;
  right: -5rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57,104,255,0.18), transparent 70%);
}

.system-panel-header,
.system-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  color: #596475;
  font-size: 0.78rem;
  font-weight: 650;
}

.system-panel-header {
  border-bottom: 1px solid var(--line);
}

.system-panel-state {
  color: var(--success);
}

.system-flow {
  padding: 1.4rem;
}

.node {
  position: relative;
  z-index: 1;
  padding: 1rem 1.05rem;
  border: 1px solid #d7dee7;
  border-radius: 0.9rem;
  background: #ffffff;
}

.node + .flow-line + .node {
  margin-top: 0;
}

.node-label {
  display: block;
  margin-bottom: 0.25rem;
  color: #7c8796;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.node strong {
  font-size: 0.98rem;
}

.node-orchestration {
  border-color: rgba(57,104,255,0.35);
  background: var(--accent-soft);
}

.node-validation {
  border-color: rgba(47,155,104,0.28);
}

.flow-line {
  width: 1px;
  height: 1.15rem;
  margin-inline: 1.7rem;
  background: #c7d0dc;
}

.system-footer {
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
}

.section {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
}

.section-heading {
  margin-bottom: 2.8rem;
}

.section-heading-wide {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.6fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
}

.section-intro {
  margin-bottom: 0;
}

.eyebrow {
  margin: 0 0 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.74rem;
  font-weight: 800;
  color: #5e6b7c;
}

.eyebrow-light {
  color: #94a6c6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  position: relative;
  overflow: hidden;
  min-height: 230px;
  padding: 1.45rem;
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  box-shadow: 0 10px 35px rgba(23, 32, 51, 0.035);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: #c7d3e3;
  box-shadow: 0 18px 45px rgba(23, 32, 51, 0.07);
}

.card::after {
  content: "";
  position: absolute;
  inset: auto -3rem -4rem auto;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57,104,255,0.08), transparent 70%);
}

.card p {
  color: var(--muted);
}

.card-index {
  margin-bottom: 2.1rem;
  color: #9ca7b5;
  font-size: 0.78rem;
  font-weight: 780;
  letter-spacing: 0.08em;
}

.card-tag {
  position: absolute;
  left: 1.45rem;
  bottom: 1.35rem;
  z-index: 1;
  padding: 0.32rem 0.55rem;
  border-radius: 0.5rem;
  background: var(--surface-soft);
  color: #667285;
  font-size: 0.72rem;
  font-weight: 700;
}

.card-wide {
  grid-column: 1 / -1;
  min-height: 180px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.25rem;
  align-items: start;
}

.card-wide .card-index {
  margin: 0;
}

.card-wide .card-tag {
  position: static;
  align-self: end;
}

.section-contrast {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 20%, rgba(57,104,255,0.18), transparent 28rem),
    var(--dark);
  color: #f5f7fb;
}

.section-contrast::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
}

.approach-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
}

.lead-light {
  color: #b9c5d8;
}

.principles {
  display: grid;
  gap: 0.85rem;
}

.principle {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 1rem;
  background: rgba(255,255,255,0.045);
}

.principle > span {
  color: #7594ff;
  font-size: 0.78rem;
  font-weight: 800;
}

.principle strong {
  display: block;
  margin-bottom: 0.25rem;
}

.principle p {
  margin-bottom: 0;
  color: #aebbd0;
  font-size: 0.92rem;
}

.domain-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.domain-list span {
  padding: 0.75rem 1rem;
  font-weight: 650;
  color: #4c5768;
}

.status-panel,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: rgba(255,255,255,0.88);
  box-shadow: 0 14px 45px rgba(23, 32, 51, 0.045);
}

.status-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: clamp(1.6rem, 4vw, 3rem);
}

.status-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.status-copy p {
  color: var(--muted);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: clamp(1.6rem, 4vw, 3rem);
}

.contact-panel p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2.3rem;
  color: #66717e;
  font-size: 0.9rem;
}

.footer-inner strong {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--ink);
}

.footer-inner p {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .hero-grid,
  .section-heading-wide,
  .approach-layout,
  .status-panel,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .system-panel {
    max-width: 680px;
  }
}

@media (max-width: 760px) {
  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding-block: 1rem;
  }

  nav {
    gap: 0.8rem 1rem;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.8rem);
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .card,
  .card-wide {
    min-height: auto;
  }

  .card-wide {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .card-tag {
    position: static;
    display: inline-block;
    margin-top: 0.7rem;
  }

  .card-index {
    margin-bottom: 1rem;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 1.25rem, 1180px);
  }

  .hero {
    padding-block: 4rem 5rem;
  }

  .hero-kicker {
    font-size: 0.76rem;
  }

  nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.6rem;
  }

  nav a {
    font-size: 0.86rem;
  }

  .system-panel-header,
  .system-footer {
    gap: 0.7rem;
    font-size: 0.72rem;
  }

  .capability-row span,
  .domain-list span {
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card {
    transition: none;
  }
}