:root {
  --bg: #06111f;
  --bg-soft: #0c1c31;
  --panel: rgba(13, 30, 53, 0.72);
  --panel-border: rgba(116, 178, 255, 0.24);
  --text: #e8f3ff;
  --muted: #97b2cf;
  --primary: #61dafb;
  --primary-strong: #6f8cff;
  --glow: rgba(97, 218, 251, 0.35);
  --max-width: 1180px;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(111, 140, 255, 0.16), transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(97, 218, 251, 0.22), transparent 25%),
    linear-gradient(180deg, #040b15 0%, #071423 45%, #050c16 100%);
  min-height: 100vh;
}

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

.site-shell {
  position: relative;
  overflow: hidden;
}

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(5, 15, 27, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  /* background:
    linear-gradient(135deg, rgba(97, 218, 251, 0.95), rgba(111, 140, 255, 0.85));
  box-shadow: 0 0 30px rgba(97, 218, 251, 0.35);
  position: relative; */
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
}

.hero,
.page-hero {
  padding: 96px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: #7fdfff;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.15;
  margin-bottom: 14px;
}

h3 {
  font-size: 1.12rem;
  margin-bottom: 14px;
}

p {
  color: var(--muted);
  line-height: 1.8;
}

.hero-text,
.section-text,
.narrow {
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 32px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 146px;
  padding: 14px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.button-primary {
  color: #04111d;
  background: linear-gradient(135deg, var(--primary), #9bfbff);
  box-shadow: 0 12px 40px var(--glow);
}

.button-secondary {
  border-color: rgba(151, 178, 207, 0.35);
  background: rgba(255, 255, 255, 0.02);
}

.hero-metrics {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.hero-metrics li,
.status-list div,
.feature-card,
.timeline-item,
.product-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-metrics li {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
}

.hero-metrics strong {
  display: block;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 0.92rem;
}

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

.panel-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(97, 218, 251, 0.16);
}

.orbit-a {
  width: 340px;
  height: 340px;
}

.orbit-b {
  width: 250px;
  height: 250px;
}

.glass-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.status-card {
  position: relative;
  z-index: 1;
  width: min(100%, 380px);
  padding: 28px;
  border-radius: 28px;
}

.card-label,
.product-tag,
.feature-index {
  display: inline-flex;
  margin-bottom: 14px;
  color: #9ee9ff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.status-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.status-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

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

.section {
  padding: 36px 0 88px;
}

.section-alt {
  padding-top: 0;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.feature-grid,
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.scope-grid {
  display: grid;
  gap: 22px;
  margin-bottom: 22px;
}

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

.feature-card,
.fact-card,
.scope-card,
.product-card,
.timeline-card {
  border-radius: 24px;
  padding: 24px;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 24px;
  align-items: center;
}

.timeline-card {
  display: grid;
  gap: 16px;
}

.timeline-item {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.timeline-item span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 700;
}

.scope-note {
  margin: 18px 0 0;
  color: #b7cbe0;
}

.page-hero {
  padding-bottom: 20px;
}

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

.product-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.product-overview {
  padding-top: 20px;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 22px;
  color: #b6cce2;
  font-size: 0.92rem;
}

.product-meta span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}


.product-points {
  margin: 0 0 24px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.9;
}

.footer {
  padding: 24px 0 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 10, 18, 0.68);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 24px;
}

.footer a,
.footer p {
  display: block;
  margin-bottom: 10px;
}

@media (max-width: 980px) {
  .hero-grid,
  .showcase-grid,
  .scope-grid,
  .feature-grid,
  .product-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 68px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: 320px;
  }

}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .topbar-inner {
    align-items: flex-start;
    padding: 16px 0;
    flex-direction: column;
  }

  .nav {
    gap: 14px;
  }

  .hero,
  .page-hero,
  .section {
    padding-left: 0;
    padding-right: 0;
  }

  h1 {
    font-size: 2.4rem;
  }

  .status-card,
  .feature-card,
  .product-card,
  .timeline-card {
    padding: 20px;
    border-radius: 20px;
  }
}