:root {
  color-scheme: dark;
  --navy-950: #031329;
  --navy-900: #061b36;
  --navy-800: #0a2a51;
  --cyan-500: #08b9c9;
  --cyan-300: #58e6ed;
  --steel-100: #f3f6f8;
  --steel-300: #aeb9c5;
  --steel-600: #596979;
  --ink: #071e3d;
  font-family: "Aptos", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: var(--navy-950);
}

.holding-page {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(28rem, 0.92fr);
  grid-template-rows: 1fr auto;
  min-height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 83% 22%, rgba(8, 185, 201, 0.16), transparent 24rem),
    linear-gradient(137deg, var(--navy-900), var(--navy-950) 68%);
}

.technical-grid {
  position: absolute;
  z-index: -3;
  inset: 0;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(126, 168, 204, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 168, 204, 0.3) 1px, transparent 1px),
    linear-gradient(rgba(126, 168, 204, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 168, 204, 0.14) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  mask-image: linear-gradient(90deg, transparent 24%, #000 66%);
}

.cyan-beam {
  position: absolute;
  z-index: -2;
  width: 1px;
  height: 150vh;
  background: linear-gradient(transparent, rgba(88, 230, 237, 0.75), transparent);
  transform: rotate(28deg);
  transform-origin: center;
  box-shadow: 0 0 24px rgba(8, 185, 201, 0.55);
}

.cyan-beam--one {
  top: -35vh;
  left: 70%;
}

.cyan-beam--two {
  top: -25vh;
  left: 77%;
  opacity: 0.28;
}

.brand-panel {
  position: relative;
  display: flex;
  align-items: center;
  padding: clamp(3rem, 7vw, 8rem);
  color: var(--ink);
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.98), rgba(235, 241, 245, 0.98)),
    var(--steel-100);
  clip-path: polygon(0 0, 100% 0, 88% 100%, 0 100%);
}

.brand-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--cyan-500);
  clip-path: polygon(99.45% 0, 100% 0, 88% 100%, 87.45% 100%);
}

.brand-logo {
  display: block;
  width: min(100%, 48rem);
  height: auto;
  filter: drop-shadow(0 18px 22px rgba(3, 19, 41, 0.1));
}

.panel-rule {
  position: absolute;
  right: 18%;
  bottom: 8%;
  width: 22%;
  height: 1px;
  background: rgba(7, 30, 61, 0.2);
}

.panel-rule::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -3px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan-500);
  border-radius: 50%;
  background: var(--steel-100);
}

.announcement {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(3rem, 7vw, 8rem) clamp(2rem, 6vw, 7rem) clamp(5rem, 8vw, 8rem);
}

h1 {
  max-width: 10ch;
  margin: 0;
  color: white;
  font-size: clamp(3.5rem, 7.5vw, 8.8rem);
  font-weight: 300;
  line-height: 0.86;
  letter-spacing: -0.065em;
}

h1 span,
h1 strong {
  display: block;
}

h1 strong {
  color: var(--cyan-300);
  font-weight: 700;
}

.status-line {
  width: min(100%, 29rem);
  height: 2px;
  margin-top: 3.25rem;
  overflow: hidden;
  background: rgba(174, 185, 197, 0.18);
}

.status-line__fill {
  display: block;
  width: 62%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-500), var(--cyan-300));
  box-shadow: 0 0 16px rgba(88, 230, 237, 0.6);
}

.engineering-mark {
  position: absolute;
  right: -6rem;
  bottom: 7rem;
  width: 18rem;
  height: 18rem;
  opacity: 0.22;
  transform: rotate(-45deg);
}

.engineering-mark__rail {
  position: absolute;
  left: 1rem;
  width: 17rem;
  height: 2px;
  transform-origin: left;
  background: var(--cyan-300);
}

.engineering-mark__rail--one {
  top: 3rem;
}

.engineering-mark__rail--two {
  top: 8rem;
  width: 14rem;
}

.engineering-mark__rail--three {
  top: 13rem;
  width: 11rem;
}

.engineering-mark__node {
  position: absolute;
  z-index: 1;
  left: 0;
  width: 1.05rem;
  height: 1.05rem;
  border: 2px solid var(--cyan-300);
  border-radius: 50%;
  transform: translateY(-0.43rem);
  background: var(--navy-900);
}

.engineering-mark__node--top {
  top: 3rem;
}

.engineering-mark__node--middle {
  top: 8rem;
}

.engineering-mark__node--bottom {
  top: 13rem;
}

.page-footer {
  position: absolute;
  z-index: 3;
  right: clamp(2rem, 5vw, 6rem);
  bottom: clamp(1.5rem, 2.5vw, 2.5rem);
  left: clamp(2rem, 5vw, 6rem);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: rgba(243, 246, 248, 0.6);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.page-footer__code {
  color: var(--cyan-300);
}

@media (max-width: 960px) {
  .holding-page {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(42vh, auto) 1fr;
  }

  .technical-grid {
    mask-image: linear-gradient(transparent 24%, #000 70%);
  }

  .brand-panel {
    padding: 4.5rem clamp(2rem, 9vw, 5rem) 5.5rem;
    clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
  }

  .brand-panel::after {
    top: auto;
    right: 0;
    bottom: 7%;
    left: 0;
    width: 100%;
    height: 4px;
    clip-path: none;
    transform: rotate(-4deg);
    transform-origin: right;
  }

  .brand-logo {
    width: min(100%, 44rem);
  }

  .announcement {
    justify-content: flex-start;
    padding: 4rem clamp(2rem, 9vw, 5rem) 7rem;
  }

  h1 {
    font-size: clamp(3.5rem, 14vw, 7rem);
  }

  .page-footer {
    right: clamp(2rem, 9vw, 5rem);
    left: clamp(2rem, 9vw, 5rem);
  }
}

@media (max-width: 560px) {
  .holding-page {
    grid-template-rows: minmax(33vh, auto) 1fr;
  }

  .brand-panel {
    padding: 4.25rem 1.5rem 4.75rem;
  }

  .announcement {
    padding: 3.25rem 1.5rem 8rem;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 5rem);
    line-height: 0.92;
  }

  .page-footer {
    right: 1.5rem;
    bottom: 1.5rem;
    left: 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
  }

  .engineering-mark {
    right: -9rem;
    bottom: 8rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .status-line__fill {
    animation: calibrate 5s ease-in-out infinite alternate;
  }
}

@keyframes calibrate {
  from {
    width: 42%;
  }
  to {
    width: 76%;
  }
}