:root {
  --bg: #06070b;
  --bg-soft: rgba(15, 18, 28, 0.7);
  --card: rgba(16, 19, 31, 0.62);
  --card-strong: rgba(21, 26, 40, 0.82);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f7ff;
  --muted: #aab2cb;
  --accent: #7c9cff;
  --accent-2: #61e7d7;
  --glow: 124, 156, 255;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(124, 156, 255, 0.22), transparent 28%),
    radial-gradient(circle at 85% 20%, rgba(97, 231, 215, 0.16), transparent 22%),
    linear-gradient(180deg, #080910 0%, #05060a 100%);
  color: var(--text);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.02));
  pointer-events: none;
}

.page-shell {
  position: relative;
  isolation: isolate;
}

.ambient {
  position: fixed;
  border-radius: 999px;
  filter: blur(100px);
  opacity: 0.55;
  pointer-events: none;
}

.ambient-a {
  width: 380px;
  height: 380px;
  background: rgba(124, 156, 255, 0.24);
  top: 4rem;
  left: -8rem;
  animation: driftA 16s ease-in-out infinite;
}

.ambient-b {
  width: 320px;
  height: 320px;
  background: rgba(97, 231, 215, 0.14);
  top: 20rem;
  right: -6rem;
  animation: driftB 18s ease-in-out infinite;
}

.grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 88%);
  opacity: 0.18;
  pointer-events: none;
}

.section {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 0 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  width: 3rem;
  height: 3rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(124, 156, 255, 0.24), rgba(97, 231, 215, 0.22));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 10px 40px rgba(var(--glow), 0.24);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand h1,
.hero h2,
.info-card h3,
.status-card h3 {
  margin: 0;
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: #ccd5f5;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.ghost-link,
.text-link {
  color: var(--text);
  text-decoration: none;
}

.ghost-link {
  padding: 0.9rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.ghost-link:hover,
.ghost-link:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  transform: translateY(-1px);
  border-color: var(--line-strong);
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  margin-top: 2rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto auto -20% 20%;
  width: 50%;
  height: 45%;
  background: radial-gradient(circle, rgba(97, 231, 215, 0.16), transparent 72%);
  filter: blur(40px);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero h2 {
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  max-width: 8ch;
}

.lede,
.info-card p,
.status-card p,
.feature-list p,
.footer span,
.muted {
  color: var(--muted);
  line-height: 1.75;
}

.lede {
  max-width: 58ch;
  font-size: 1.05rem;
  margin: 1.3rem 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 2rem 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.9rem 1.3rem;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, rgba(124, 156, 255, 0.98), rgba(96, 231, 215, 0.9));
  color: #09111e;
  font-weight: 700;
  box-shadow: 0 20px 35px rgba(var(--glow), 0.24);
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 2rem;
}

.signal {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.signal-label,
.tiny-label {
  display: block;
  color: #bfc8e8;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.7rem;
}

.signal strong {
  display: block;
  margin-top: 0.45rem;
  font-size: 1rem;
}

.hero-panel {
  display: grid;
  place-items: center;
  min-height: 420px;
}

.orbital-card {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.orbital-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.orbital-ring-a {
  animation: spin 20s linear infinite;
}

.orbital-ring-b {
  inset: 12%;
  border-style: dashed;
  animation: spinReverse 24s linear infinite;
}

.orbital-core {
  width: 56%;
  padding: 2rem 1.5rem;
  text-align: center;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 14px 60px rgba(0, 0, 0, 0.34);
}

.orbital-core strong {
  display: block;
  font-size: 2rem;
  margin: 0.4rem 0 0.6rem;
}

.split,
.status-grid {
  display: grid;
  gap: 1.4rem;
  margin-top: 1.4rem;
}

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

.status-grid {
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
}

.info-card,
.status-card {
  padding: 1.6rem;
  border-radius: var(--radius-lg);
}

.highlight {
  background: linear-gradient(180deg, rgba(122, 156, 255, 0.14), rgba(255, 255, 255, 0.04));
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 1rem;
}

.feature-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.feature-list li > span {
  min-width: 2.5rem;
  padding-top: 0.15rem;
  color: #d5dcf9;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.feature-list strong {
  display: block;
  margin-bottom: 0.2rem;
}

.stacked-lines {
  display: grid;
  gap: 0.8rem;
}

.stacked-lines span {
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0 2.5rem;
}

.footer p {
  margin: 0 0 0.35rem;
}

.footer-meta {
  display: flex;
  gap: 1rem;
  color: var(--muted);
}

.text-link {
  display: inline-block;
  margin-top: 0.7rem;
  color: #dce4ff;
}

@keyframes driftA {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(40px, 36px, 0); }
}

@keyframes driftB {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(-50px, 24px, 0); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spinReverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@media (max-width: 960px) {
  .hero,
  .split,
  .status-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: 300px;
  }

  .signal-row {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding: 1.25rem;
    margin-top: 1.25rem;
  }

  .hero h2 {
    font-size: clamp(2.2rem, 16vw, 3.8rem);
  }

  .orbital-core {
    width: 68%;
    padding: 1.4rem 1rem;
  }
}

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