:root {
  --bg: #05070A;
  --surface: #0D1117;
  --surface-2: #111827;
  --text: #F5F7FA;
  --text-secondary: #9BA3AF;
  --muted: #6B7280;
  --accent: #60A5FA;
  --accent-2: #5EEAD4;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.16);
  --container: 1120px;
  --header-height: 96px;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(96, 165, 250, 0.16), transparent 32rem),
    radial-gradient(circle at 85% 18%, rgba(94, 234, 212, 0.1), transparent 28rem),
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 48px 48px, 48px 48px, auto;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.05), transparent 36rem),
    linear-gradient(180deg, rgba(5, 7, 10, 0), var(--bg) 78%);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 4px;
}

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

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(5, 7, 10, 0.72);
}

.header-inner {
  display: flex;
  width: 100%;
  min-height: 0;
  align-items: stretch;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  padding: 24px 0 18px;
}

.brand {
  width: 100%;
  display: flex;
  justify-content: center;
}

.site-logo {
  flex: 0 0 auto;
  width: 1314px;
  max-width: none;
  height: auto;
  margin-inline: auto;
  filter: drop-shadow(0 0 24px rgba(96, 165, 250, 0.16));
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.site-nav a {
  border-radius: 8px;
  padding: 10px 12px;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
}

.section-shell {
  scroll-margin-top: var(--header-height);
  padding: 88px 0;
}

.hero {
  display: flex;
  min-height: calc(70vh - var(--header-height));
  align-items: center;
  padding-top: 28px;
}

.hero-grid {
  position: relative;
  isolation: isolate;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 840px;
  margin-bottom: 24px;
  font-size: clamp(2.75rem, 5.4vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  color: var(--text);
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-lede,
.section-text {
  color: var(--text-secondary);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.hero-lede {
  max-width: 760px;
  margin-bottom: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(96, 165, 250, 0.6);
  border-radius: 8px;
  padding: 0 22px;
  color: #041019;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 42px rgba(96, 165, 250, 0.2);
}

.system-panel {
  position: absolute;
  top: 50%;
  right: -8%;
  z-index: 1;
  width: min(42vw, 480px);
  height: min(42vw, 480px);
  min-height: 360px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    radial-gradient(circle at 50% 45%, rgba(96, 165, 250, 0.16), transparent 11rem),
    radial-gradient(circle at 50% 50%, rgba(94, 234, 212, 0.06), transparent 18rem),
    transparent;
  background-size: 38px 38px, 38px 38px, auto, auto, auto;
  opacity: 0.72;
  overflow: hidden;
  pointer-events: none;
  transform: translateY(-44%);
}

.system-panel::after {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  content: "";
  background: radial-gradient(circle, transparent 0 50%, rgba(5, 7, 10, 0.42) 78%);
}

.orbit,
.system-core,
.signal-line,
.node {
  position: absolute;
  z-index: 1;
}

.orbit {
  border: 1px solid rgba(96, 165, 250, 0.28);
  border-radius: 50%;
  inset: 21%;
}

.orbit-two {
  inset: 31%;
  border-color: rgba(94, 234, 212, 0.28);
}

.system-core {
  top: 50%;
  left: 50%;
  width: 72px;
  height: 72px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.92), rgba(94, 234, 212, 0.92));
  box-shadow: 0 0 54px rgba(96, 165, 250, 0.4);
  transform: translate(-50%, -50%) rotate(45deg);
}

.signal-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.72), transparent);
  transform-origin: center;
}

.line-a {
  top: 47%;
  left: 16%;
  width: 68%;
}

.line-b {
  top: 36%;
  left: 20%;
  width: 62%;
  transform: rotate(32deg);
}

.line-c {
  top: 63%;
  left: 20%;
  width: 62%;
  transform: rotate(-29deg);
}

.node {
  width: 10px;
  height: 10px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 22px rgba(94, 234, 212, 0.48);
}

.node-a {
  top: 20%;
  left: 28%;
}

.node-b {
  top: 31%;
  right: 20%;
}

.node-c {
  right: 28%;
  bottom: 20%;
}

.node-d {
  bottom: 29%;
  left: 18%;
}

.split-section {
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 0.58fr);
}

.split-section .section-text {
  max-width: 700px;
  margin-bottom: 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.focus-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.focus-card {
  min-height: 222px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 26px;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.86), rgba(13, 17, 23, 0.76));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.04);
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.focus-card:hover {
  border-color: rgba(96, 165, 250, 0.38);
  background: linear-gradient(180deg, rgba(18, 29, 48, 0.9), rgba(13, 17, 23, 0.8));
  transform: translateY(-2px);
}

.focus-card p {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.stage-panel,
.contact-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: clamp(28px, 5vw, 52px);
  background:
    radial-gradient(circle at 85% 0%, rgba(96, 165, 250, 0.1), transparent 21rem),
    linear-gradient(180deg, rgba(13, 17, 23, 0.88), rgba(8, 12, 18, 0.9));
}

.stage-panel .section-text,
.contact-panel .section-text {
  max-width: 760px;
  margin-bottom: 0;
}

.contact-section {
  padding-top: 40px;
}

.contact-link {
  display: inline-block;
  margin-top: 26px;
  color: var(--text);
  font-size: clamp(1.35rem, 4vw, 2.1rem);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(96, 165, 250, 0.65);
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

.contact-link:hover {
  color: var(--accent-2);
  text-decoration-color: currentColor;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 0.92rem;
}

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

@media (max-width: 980px) {
  .split-section {
    grid-template-columns: 1fr;
  }

  .system-panel {
    right: -18%;
    width: 420px;
    height: 420px;
    min-height: 0;
  }

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

@media (max-width: 640px) {
  :root {
    --header-height: 84px;
  }

  .container {
    width: min(100% - 32px, var(--container));
  }

  .header-inner {
    width: calc(100% - 20px);
    gap: 8px;
    padding: 14px 0 12px;
  }

  .brand {
    min-width: 0;
  }

  .site-logo {
    width: 100%;
    max-width: 100%;
  }

  .site-nav {
    width: 100%;
    justify-content: center;
  }

  .site-nav a {
    padding: 8px 6px;
  }

  .section-shell {
    padding: 56px 0;
  }

  .hero {
    min-height: auto;
    padding-top: 32px;
  }

  h1 {
    font-size: clamp(2.5rem, 15vw, 4rem);
  }

  .hero-lede {
    margin-bottom: 28px;
  }

  .system-panel {
    top: 42%;
    right: -48%;
    width: 340px;
    height: 340px;
    opacity: 0.42;
  }

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

  .focus-card {
    min-height: 0;
    padding: 22px;
  }

  .footer-inner {
    min-height: 108px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

@media (max-width: 380px) {
  .site-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}