:root {
  color-scheme: dark;
  --bg: #070a12;
  --surface: #0d1220;
  --surface-2: #111827;
  --line: rgba(255,255,255,.10);
  --line-strong: rgba(255,255,255,.17);
  --text: #f7f9fc;
  --muted: #9ca7b8;
  --muted-2: #667085;
  --accent: #7cf5d2;
  --accent-2: #66b9ff;
  --accent-soft: rgba(124,245,210,.12);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 9%, rgba(65, 119, 255, .11), transparent 28rem),
    radial-gradient(circle at 18% 16%, rgba(124, 245, 210, .07), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.page-shell { overflow: hidden; }

.site-header {
  width: min(calc(100% - 40px), var(--max));
  height: 84px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
  font-size: 19px;
  font-weight: 740;
  letter-spacing: -.02em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  position: relative;
  display: inline-grid;
  place-items: center;
}
.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  content: "";
  position: absolute;
  border: 1.7px solid var(--accent);
  border-radius: 50%;
}
.brand-mark::before { width: 26px; height: 26px; opacity: .35; }
.brand-mark::after { width: 16px; height: 16px; opacity: .7; }
.brand-mark span:nth-child(1) { width: 5px; height: 5px; border: 0; background: var(--accent); box-shadow: 0 0 16px rgba(124,245,210,.65); }
.brand-mark span:nth-child(2), .brand-mark span:nth-child(3) { display: none; }
.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
  text-decoration: none;
  color: #b5becc;
  font-size: 14px;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.nav a:hover { color: #fff; }
.nav .nav-console {
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: #f5f7fb;
  background: rgba(255,255,255,.03);
}
.nav .nav-console:hover { border-color: rgba(124,245,210,.45); background: var(--accent-soft); }

.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 690px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 34px;
  padding: 70px 0 74px;
}
.eyebrow, .section-label {
  color: #a7b2c3;
  letter-spacing: .17em;
  font-size: 11px;
  font-weight: 720;
}
.eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 23px; }
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(124,245,210,.08), 0 0 18px rgba(124,245,210,.5);
}
.hero h1 {
  margin: 0;
  max-width: 700px;
  font-size: clamp(48px, 5.5vw, 76px);
  line-height: 1.04;
  letter-spacing: -.052em;
  font-weight: 700;
}
.hero h1 span {
  color: transparent;
  background: linear-gradient(100deg, #fff 5%, var(--accent) 50%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
}
.hero-description {
  max-width: 610px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
  word-break: keep-all;
}
.hero-actions { display: flex; gap: 12px; margin-top: 33px; flex-wrap: wrap; }
.button {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 9px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 680;
}
.button-primary { background: var(--accent); color: #07110e; }
.button-primary:hover { filter: brightness(1.05); }
.button-secondary { border: 1px solid var(--line-strong); color: #edf1f7; background: rgba(255,255,255,.03); }
.button-secondary:hover { background: rgba(255,255,255,.07); }
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.hero-meta div { display: flex; flex-direction: column; gap: 6px; }
.hero-meta strong { font-size: 12px; font-weight: 670; color: #e9eef5; }
.hero-meta span { font-size: 11px; color: var(--muted-2); line-height: 1.5; }

.hero-visual {
  position: relative;
  height: 540px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 22px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(124,245,210,.10), transparent 32%),
    linear-gradient(145deg, rgba(255,255,255,.025), rgba(255,255,255,.008));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 30px 80px rgba(0,0,0,.24);
}
.grid-plane {
  position: absolute;
  inset: 0;
  opacity: .45;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}
.orbit {
  position: absolute;
  left: 50%;
  top: 49%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(124,245,210,.13);
  border-radius: 50%;
}
.orbit-one { width: 305px; height: 305px; }
.orbit-two { width: 430px; height: 430px; opacity: .6; }
.network-card {
  position: absolute;
  z-index: 2;
  min-width: 148px;
  padding: 15px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(12,17,29,.89);
  backdrop-filter: blur(15px);
  box-shadow: 0 18px 50px rgba(0,0,0,.32);
}
.network-card strong { display: block; margin-top: 3px; font-size: 14px; }
.network-card small { display: block; margin-top: 6px; color: var(--muted-2); font-size: 11px; }
.card-kicker { color: var(--accent); font-size: 9px; font-weight: 750; letter-spacing: .16em; }
.station-card { left: 34px; top: 98px; }
.rover-card { right: 30px; bottom: 76px; }
.core-card {
  left: 50%;
  top: 48%;
  transform: translate(-50%, -50%);
  width: 168px;
  padding: 24px 18px;
  text-align: center;
  border-color: rgba(124,245,210,.35);
  background: linear-gradient(180deg, rgba(20,40,44,.92), rgba(9,18,24,.96));
  box-shadow: 0 0 0 7px rgba(124,245,210,.035), 0 24px 70px rgba(0,0,0,.42);
}
.core-mark { width: 46px; height: 46px; margin: 0 auto 12px; position: relative; }
.core-mark::before, .core-mark::after, .core-mark span { content: ""; position: absolute; border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%,-50%); }
.core-mark::before { width: 45px; height: 45px; border: 1px solid rgba(124,245,210,.25); }
.core-mark::after { width: 30px; height: 30px; border: 1px solid rgba(124,245,210,.55); }
.core-mark span:first-child { width: 9px; height: 9px; background: var(--accent); box-shadow: 0 0 22px rgba(124,245,210,.8); }
.core-mark span:nth-child(2), .core-mark span:nth-child(3) { display: none; }
.flow-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.flow-lines path { fill: none; stroke: rgba(124,245,210,.52); stroke-width: 1.5; stroke-dasharray: 5 7; }

.architecture-strip {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  min-height: 126px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
}
.arch-node { padding: 22px 32px; display: grid; grid-template-columns: auto 1fr; column-gap: 14px; }
.arch-node span { grid-row: 1 / 3; color: var(--muted-2); font-size: 10px; font-weight: 700; padding-top: 3px; }
.arch-node strong { font-size: 14px; }
.arch-node small { margin-top: 4px; color: var(--muted-2); font-size: 11px; }
.arch-node.emphasis strong { color: var(--accent); }
.arch-arrow { color: #3e4959; }

.platform-section, .connect-section {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}
.platform-section { padding: 132px 0 136px; }
.section-heading { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px 58px; align-items: end; }
.section-heading .section-label { grid-column: 1 / -1; }
.section-heading h2, .connect-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: -.04em;
  font-weight: 680;
}
.section-heading p, .connect-copy p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; word-break: keep-all; }
.feature-grid { margin-top: 66px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.feature-card {
  min-height: 264px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(255,255,255,.028), rgba(255,255,255,.012));
  transition: border-color .2s ease, transform .2s ease;
}
.feature-card:hover { border-color: rgba(124,245,210,.22); transform: translateY(-2px); }
.feature-number { display: block; color: #566173; font-size: 11px; font-weight: 720; }
.feature-card h3 { margin: 46px 0 11px; font-size: 21px; letter-spacing: -.02em; }
.feature-card p { margin: 0; max-width: 500px; color: var(--muted); line-height: 1.72; font-size: 14px; word-break: keep-all; }
.feature-tag { display: inline-flex; margin-top: 24px; padding: 6px 9px; border-radius: 7px; background: rgba(255,255,255,.045); color: #818da0; font-size: 10px; }

.connect-section {
  margin-bottom: 130px;
  padding: 66px;
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 70px;
  align-items: center;
  border: 1px solid rgba(124,245,210,.14);
  border-radius: 22px;
  background:
    radial-gradient(circle at 85% 30%, rgba(102,185,255,.08), transparent 40%),
    linear-gradient(130deg, rgba(124,245,210,.045), rgba(255,255,255,.018));
}
.connect-copy .section-label { display: block; margin-bottom: 19px; }
.connect-copy p { margin-top: 22px; }
.connect-copy .connect-note { margin-top: 14px; font-size: 12px; color: #697588; }
.connection-card {
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background: rgba(5,9,16,.75);
  box-shadow: 0 22px 60px rgba(0,0,0,.28);
}
.connection-title { display: flex; align-items: center; justify-content: space-between; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.status-pill { font-size: 9px; letter-spacing: .15em; color: #bac3d0; font-weight: 720; }
.status-pill span { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgba(124,245,210,.6); }
.secure-label { font-size: 9px; color: #647084; }
dl { margin: 8px 0 0; }
dl div { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 47px; border-bottom: 1px solid rgba(255,255,255,.055); }
dt { color: #6f7b8e; font-size: 11px; }
dd { margin: 0; color: #e5eaf1; font-size: 12px; font-family: "SFMono-Regular", Consolas, monospace; text-align: right; }
.endpoint-code { margin-top: 18px; padding: 13px 14px; border-radius: 9px; background: #080d16; color: #d7dde7; font-size: 11px; font-family: "SFMono-Regular", Consolas, monospace; overflow-wrap: anywhere; }
.endpoint-code span { color: #566275; }

.site-footer {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  min-height: 170px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: 1fr auto;
  gap: 20px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 35px 0;
}
.footer-brand p { margin: 9px 0 0; color: #586477; font-size: 11px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: #818c9e; text-decoration: none; font-size: 12px; }
.footer-links a:hover { color: #fff; }
.copyright { grid-column: 1 / -1; margin: 0; color: #455063; font-size: 10px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .hero-visual { height: 500px; }
  .section-heading { grid-template-columns: 1fr; }
  .connect-section { grid-template-columns: 1fr; padding: 44px; gap: 42px; }
}

@media (max-width: 640px) {
  .site-header { width: min(calc(100% - 28px), var(--max)); height: 72px; }
  .nav a:not(.nav-console) { display: none; }
  .nav { gap: 0; }
  .hero, .platform-section, .connect-section, .architecture-strip, .site-footer { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding: 54px 0 62px; min-height: auto; }
  .hero h1 { font-size: 44px; }
  .hero-description { font-size: 15px; }
  .hero-meta { grid-template-columns: 1fr; gap: 13px; }
  .hero-meta div { display: grid; grid-template-columns: 135px 1fr; align-items: center; }
  .hero-visual { height: 420px; margin-top: 10px; }
  .station-card { left: 18px; top: 52px; }
  .rover-card { right: 18px; bottom: 40px; }
  .core-card { width: 148px; }
  .architecture-strip { grid-template-columns: 1fr; padding: 12px 0; }
  .arch-node { padding: 15px 16px; }
  .arch-arrow { display: none; }
  .platform-section { padding: 98px 0; }
  .feature-grid { grid-template-columns: 1fr; margin-top: 46px; }
  .feature-card { min-height: 240px; }
  .connect-section { padding: 30px 22px; margin-bottom: 90px; }
  .connect-copy h2, .section-heading h2 { font-size: 35px; }
  .site-footer { grid-template-columns: 1fr; grid-template-rows: auto; padding: 34px 0; }
  .copyright { grid-column: 1; }
}