:root {
  --bg: #03070b;
  --bg-deep: #07131b;
  --surface: rgba(7, 15, 22, 0.72);
  --surface-strong: rgba(9, 19, 28, 0.88);
  --line: rgba(111, 232, 255, 0.16);
  --line-strong: rgba(111, 232, 255, 0.42);
  --glow: #64e9ff;
  --acid: #b6ff63;
  --text: #edf7ff;
  --muted: #8fa9b7;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius-xl: 36px;
  --radius-lg: 22px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 22%, rgba(35, 127, 180, 0.2), transparent 26%),
    radial-gradient(circle at 82% 20%, rgba(144, 255, 64, 0.1), transparent 22%),
    linear-gradient(180deg, #020508 0%, #03070b 48%, #02060a 100%);
  overflow: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(rgba(100, 233, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 233, 255, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at center, black 38%, transparent 88%);
  opacity: 0.4;
}

body::after {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, transparent 14%, transparent 86%, rgba(255, 255, 255, 0.03) 100%),
    radial-gradient(circle at center, rgba(100, 233, 255, 0.08), transparent 42%);
}

.landing-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.hero-card {
  position: relative;
  width: min(1080px, 100%);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(6, 13, 20, 0.9), rgba(5, 10, 15, 0.92)),
    radial-gradient(circle at 18% 28%, rgba(100, 233, 255, 0.12), transparent 28%),
    radial-gradient(circle at 84% 22%, rgba(182, 255, 99, 0.08), transparent 22%);
  box-shadow: var(--shadow);
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: calc(var(--radius-xl) - 1px);
  background:
    linear-gradient(135deg, rgba(182, 255, 99, 0.05), transparent 34%),
    radial-gradient(circle at 68% 44%, rgba(100, 233, 255, 0.06), transparent 24%);
  pointer-events: none;
}

.frame-lines,
.hero-inner,
.brand,
.brand-copy,
.hero-copy,
.info-item {
  position: relative;
  z-index: 1;
}

.frame-lines::before,
.frame-lines::after {
  content: "";
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.frame-lines::before {
  top: 84px;
  left: 28px;
  width: 180px;
}

.frame-lines::after {
  right: 28px;
  bottom: 86px;
  width: 220px;
}

.hero-inner {
  display: grid;
  gap: 44px;
  padding: 34px 38px 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  width: fit-content;
  color: inherit;
  text-decoration: none;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-copy strong {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  line-height: 1;
  font-weight: 900;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.92rem;
}

.brand-mark {
  position: relative;
  width: 62px;
  aspect-ratio: 1;
  flex: none;
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(25% 7%, 75% 7%, 100% 50%, 75% 93%, 25% 93%, 0 50%);
}

.brand-mark::before {
  background: linear-gradient(155deg, var(--acid), rgba(100, 233, 255, 0.82));
  box-shadow: 0 0 28px rgba(182, 255, 99, 0.26);
}

.brand-mark::after {
  inset: 8px;
  background: var(--bg-deep);
}

.brand-mark span {
  inset: 18px;
  background: linear-gradient(135deg, var(--acid), rgba(100, 233, 255, 0.84));
}

.hero-copy {
  max-width: 760px;
}

.divider {
  width: 96px;
  height: 1px;
  background: linear-gradient(90deg, var(--acid), transparent);
  margin-bottom: 22px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(3.2rem, 7.4vw, 5.7rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
  text-wrap: balance;
}

.hero-subtitle {
  margin: 18px 0 0;
  max-width: 30rem;
  color: rgba(237, 247, 255, 0.78);
  font-size: 1.05rem;
  line-height: 1.75;
}

.info-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.86fr;
  gap: 14px;
  align-items: stretch;
}

.info-item {
  min-height: 116px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(9, 20, 29, 0.88), rgba(7, 14, 21, 0.84)),
    radial-gradient(circle at top left, rgba(100, 233, 255, 0.05), transparent 30%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.info-item span {
  color: var(--muted);
  font-family: "Orbitron", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
}

.info-item strong {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: clamp(1.05rem, 2vw, 1.34rem);
  line-height: 1.3;
  font-weight: 800;
  color: var(--text);
  word-break: break-word;
}

.info-record strong,
.info-domain strong {
  color: #f0f9ff;
}

.status-item {
  background:
    linear-gradient(180deg, rgba(9, 20, 29, 0.9), rgba(7, 14, 21, 0.86)),
    radial-gradient(circle at top left, rgba(182, 255, 99, 0.08), transparent 34%);
}

.status-item strong {
  color: var(--glow);
}

.status-item i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 0 rgba(182, 255, 99, 0.28);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(182, 255, 99, 0.3);
  }
  50% {
    box-shadow: 0 0 0 11px rgba(182, 255, 99, 0);
  }
}

@media (max-width: 820px) {
  body {
    overflow: auto;
  }

  .landing-shell {
    padding: 14px;
    place-items: start stretch;
  }

  .hero-card {
    min-height: calc(100vh - 28px);
  }

  .hero-inner {
    gap: 28px;
    padding: 24px 20px 22px;
  }

  .frame-lines::before,
  .frame-lines::after {
    display: none;
  }

  .brand {
    gap: 12px;
  }

  .brand-mark {
    width: 52px;
  }

  .brand-copy strong {
    font-size: 1.22rem;
  }

  .brand-copy small {
    font-size: 0.82rem;
  }

  .divider {
    width: 72px;
    margin-bottom: 16px;
  }

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

  .hero-subtitle {
    margin-top: 14px;
    font-size: 0.95rem;
    line-height: 1.68;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .info-item {
    min-height: 96px;
    padding: 15px 16px;
  }
}

@media (max-height: 760px) {
  .landing-shell {
    padding-block: 16px;
  }

  .hero-inner {
    gap: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}