:root {
  color-scheme: dark;
  --ink: #071a2d;
  --panel: #0b243c;
  --line: rgba(159, 206, 235, 0.18);
  --blue: #0ba0df;
  --blue-light: #68cef7;
  --white: #f7fbfe;
  --muted: #a9bccb;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--white);
  background:
    radial-gradient(circle at 85% 4%, rgba(11, 160, 223, 0.2), transparent 30rem),
    linear-gradient(140deg, #071a2d 0%, #061626 70%, #04111e 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

.site-header,
main,
footer {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 110px;
  border-bottom: 1px solid var(--line);
}

.brand img {
  display: block;
  width: 150px;
  height: auto;
}

.status {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.status i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 6px rgba(11, 160, 223, 0.12);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: clamp(48px, 8vw, 110px);
  align-items: end;
  padding: clamp(72px, 11vw, 150px) 0 90px;
}

.eyebrow {
  margin: 0 0 24px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-light);
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3.5rem, 8.7vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.065em;
}

h1 span {
  color: var(--blue);
}

.intro {
  max-width: 690px;
  margin: 38px 0 0;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.6;
  color: #c9d7e1;
}

.availability {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 38px;
  padding-left: 18px;
  border-left: 3px solid var(--blue);
}

.availability strong {
  font-size: 1rem;
}

.availability span {
  color: var(--muted);
}

.signal-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: linear-gradient(160deg, rgba(16, 50, 79, 0.94), rgba(7, 27, 46, 0.96));
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.28);
}

.signal-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-heading b {
  color: var(--blue-light);
}

.signal-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-panel li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 80px;
  padding: 18px 26px;
  border-bottom: 1px solid var(--line);
}

.signal-panel li:last-child {
  border-bottom: 0;
}

.signal-panel li span {
  color: var(--muted);
}

.signal-panel li strong {
  text-align: right;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principles article {
  padding: 38px clamp(22px, 3vw, 38px) 42px;
  border-right: 1px solid var(--line);
}

.principles article:last-child {
  border-right: 0;
}

.principles article > span {
  display: block;
  margin-bottom: 42px;
  color: var(--blue-light);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.principles p {
  margin: 0;
  line-height: 1.65;
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 42px;
  color: #7f96a8;
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

footer p:last-child {
  text-align: right;
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 70px;
  }

  .signal-panel {
    max-width: 620px;
  }

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

  .principles article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .principles article:last-child {
    border-bottom: 0;
  }

  .principles article > span {
    margin-bottom: 24px;
  }
}

@media (max-width: 560px) {
  .site-header,
  main,
  footer {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 88px;
  }

  .brand img {
    width: 120px;
  }

  .status {
    font-size: 0.68rem;
  }

  .hero {
    gap: 52px;
    padding: 54px 0 66px;
  }

  h1 {
    font-size: clamp(3.2rem, 17vw, 5rem);
  }

  .signal-panel li {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .signal-panel li strong {
    text-align: left;
  }

  footer {
    flex-direction: column;
  }

  footer p:last-child {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}