:root {
  --ink: #f8fbff;
  --muted: #c8d9eb;
  --deep: #071627;
  --panel: rgba(8, 28, 48, 0.72);
  --line: rgba(143, 220, 255, 0.36);
  --cyan: #37d7ff;
  --blue: #2d76ff;
  --green: #5ee0a2;
  --yellow: #ffd767;
  --orange: #ff9a4c;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  color: var(--ink);
  background: #06111f;
  overflow-x: hidden;
}

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

.poster {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 78% 28%, rgba(55, 215, 255, 0.28), transparent 24rem),
    radial-gradient(circle at 8% 82%, rgba(94, 224, 162, 0.16), transparent 24rem),
    linear-gradient(135deg, #071627 0%, #0b2440 44%, #092231 100%);
  padding: clamp(24px, 4vw, 56px);
}

.poster::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.85), transparent 86%);
}

.poster::after {
  content: "";
  position: absolute;
  inset: auto -12% -38% -12%;
  height: 48vh;
  z-index: -1;
  background: radial-gradient(ellipse at center, rgba(55, 215, 255, 0.3), transparent 62%);
  filter: blur(10px);
}

.sky-layer {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.bg {
  position: absolute;
  object-fit: cover;
  border: 1px solid rgba(143, 220, 255, 0.24);
  opacity: 0.3;
  filter: saturate(1.14) contrast(1.04);
}

.bg-satellite {
  top: -9vh;
  right: -9vw;
  width: min(50vw, 720px);
  aspect-ratio: 16 / 10;
  border-radius: 0;
  opacity: 0.34;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.26);
}

.bg-cloudmap {
  left: -14vw;
  bottom: 4vh;
  width: min(48vw, 700px);
  aspect-ratio: 4 / 3;
  opacity: 0.24;
  transform: rotate(-8deg);
}

.bg-fusion {
  right: 20vw;
  bottom: 10vh;
  width: min(28vw, 430px);
  aspect-ratio: 4 / 3;
  opacity: 0.16;
  transform: rotate(5deg);
}

.orbit {
  position: absolute;
  border: 1px solid rgba(143, 220, 255, 0.42);
  border-radius: 50%;
  transform: rotate(-18deg);
}

.orbit-one {
  width: 82vw;
  height: 28vw;
  right: -22vw;
  top: 30vh;
}

.orbit-two {
  width: 54vw;
  height: 18vw;
  right: 6vw;
  top: 48vh;
  border-color: rgba(255, 215, 103, 0.28);
}

.signal {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--cyan);
  box-shadow: 0 0 22px rgba(55, 215, 255, 0.9);
}

.signal-a {
  right: 22vw;
  top: 19vh;
}

.signal-b {
  left: 18vw;
  bottom: 24vh;
  background: var(--yellow);
  box-shadow: 0 0 22px rgba(255, 215, 103, 0.82);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  align-items: center;
  gap: clamp(18px, 4vw, 68px);
  min-height: calc(100vh - 240px);
  max-width: 1480px;
  margin: 0 auto;
}

.copy {
  max-width: 820px;
  padding-top: 2vh;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 18px;
  color: #bff2ff;
  font-size: clamp(28px, 3.1vw, 48px);
  font-weight: 900;
  line-height: 1.12;
  text-shadow: 0 10px 28px rgba(55, 215, 255, 0.24);
}

.eyebrow::before {
  content: "";
  width: clamp(54px, 5vw, 86px);
  height: 5px;
  background: linear-gradient(90deg, var(--cyan), var(--yellow));
}

h1 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(32px, 4.3vw, 64px);
  line-height: 1.14;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 16px 42px rgba(0, 0, 0, 0.42);
}

.lead {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 1.8vw, 26px);
  line-height: 1.75;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 34px;
}

.primary-link,
.mission-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 6px;
  font-size: 17px;
  font-weight: 900;
}

.primary-link {
  color: #06111f;
  background: linear-gradient(135deg, #e9fbff, #37d7ff 48%, #ffd767);
  box-shadow: 0 18px 36px rgba(55, 215, 255, 0.28);
}

.mission-code {
  color: #d8f7ff;
  border: 1px solid var(--line);
  background: rgba(4, 18, 32, 0.46);
}

.mascot-wrap {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(68vw, 720px);
  margin: 0;
}

.mascot-wrap::before {
  content: "";
  position: absolute;
  width: min(44vw, 630px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 42% 42%, rgba(255, 255, 255, 0.28), transparent 38%),
    radial-gradient(circle at 58% 56%, rgba(55, 215, 255, 0.3), transparent 60%);
  border: 1px solid rgba(143, 220, 255, 0.34);
  box-shadow: inset 0 0 70px rgba(143, 220, 255, 0.18), 0 28px 80px rgba(0, 0, 0, 0.25);
}

.mascot {
  position: relative;
  width: min(42vw, 650px);
  max-height: 78vh;
  object-fit: contain;
  filter: drop-shadow(0 28px 44px rgba(0, 0, 0, 0.34));
}

figcaption {
  position: absolute;
  right: 9%;
  bottom: 9%;
  min-width: 126px;
  padding: 10px 16px;
  border: 1px solid rgba(143, 220, 255, 0.46);
  border-radius: 6px;
  color: #06111f;
  background: rgba(233, 251, 255, 0.92);
  font-size: 20px;
  font-weight: 900;
  text-align: center;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.18);
}

.halls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  max-width: 1480px;
  margin: clamp(18px, 3vw, 34px) auto 0;
}

.hall {
  position: relative;
  min-height: 148px;
  padding: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(18px);
}

.hall::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--accent);
}

.hall::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.16), transparent 68%);
}

.hall span,
.hall small {
  display: block;
  position: relative;
  z-index: 1;
}

.hall span {
  color: #bfeeff;
  font-size: 14px;
  font-weight: 800;
}

.hall strong {
  display: block;
  position: relative;
  z-index: 1;
  margin-top: 8px;
  font-size: clamp(24px, 2.1vw, 34px);
  line-height: 1.12;
}

.hall small {
  max-width: 14em;
  margin-top: 14px;
  color: #c8d9eb;
  font-size: 15px;
  line-height: 1.55;
}

.hall-one {
  --accent: linear-gradient(90deg, #37d7ff, #2d76ff);
}

.hall-two {
  --accent: linear-gradient(90deg, #2d76ff, #ff9a4c);
}

.hall-three {
  --accent: linear-gradient(90deg, #5ee0a2, #ffd767);
}

.hall-four {
  --accent: linear-gradient(90deg, #37d7ff, #5ee0a2);
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .copy {
    max-width: none;
  }

  .mascot-wrap {
    min-height: 520px;
  }

  .mascot {
    width: min(72vw, 560px);
  }

  .mascot-wrap::before {
    width: min(70vw, 560px);
  }

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

@media (max-width: 680px) {
  .poster {
    padding: 22px 16px 26px;
  }

  .bg-satellite {
    width: 92vw;
    right: -36vw;
  }

  .bg-cloudmap,
  .bg-fusion {
    display: none;
  }

  h1 {
    font-size: clamp(30px, 8.6vw, 44px);
  }

  .eyebrow {
    font-size: clamp(26px, 8vw, 38px);
  }

  .lead {
    font-size: 17px;
  }

  .actions {
    align-items: stretch;
  }

  .primary-link,
  .mission-code {
    width: 100%;
  }

  .mascot-wrap {
    min-height: 410px;
  }

  .mascot {
    width: min(96vw, 420px);
  }

  .mascot-wrap::before {
    width: min(92vw, 390px);
  }

  figcaption {
    right: 2%;
    bottom: 5%;
    font-size: 17px;
  }

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

  .hall {
    min-height: 132px;
  }
}