*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #070d18;
  color: #e8eef8;
  line-height: 1.65;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

:root {
  --bg: #070d18;
  --panel: #0f1729;
  --panel-2: #152038;
  --line: rgba(232,238,248,0.08);
  --text: #e8eef8;
  --muted: #8b9bb8;
  --cyan: #3dd6f5;
  --cyan-dim: rgba(61,214,245,0.15);
  --mint: #5eead4;
}

/* ——— WINDOW CHROME NAV (unique) ——— */
.chrome {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #0a1220;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
}
.chrome .dots {
  display: flex;
  gap: 6px;
  padding-left: 4px;
}
.chrome .dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: block;
}
.chrome .dots i:nth-child(1) { background: #ff5f57; }
.chrome .dots i:nth-child(2) { background: #febc2e; }
.chrome .dots i:nth-child(3) { background: #28c840; }

.chrome .title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.04em;
  flex: 1;
  text-align: center;
}
.chrome .title strong {
  color: var(--cyan);
  font-weight: 800;
}

.chrome nav {
  display: flex;
  background: var(--panel);
  border-radius: 8px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.chrome nav a {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 8px 14px;
  border-right: 1px solid var(--line);
  transition: all 0.2s;
}
.chrome nav a:last-child { border-right: none; }
.chrome nav a:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.chrome nav a.active {
  color: var(--bg);
  background: var(--cyan);
}

.mob {
  display: none;
  background: var(--cyan);
  color: var(--bg);
  border: none;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
}

/* ——— ORBIT HERO ——— */
.orbit {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  align-items: center;
}
.orbit .kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}
.orbit h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}
.orbit h1 span { color: var(--cyan); }
.orbit p {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 28px;
  max-width: 440px;
}
.orbit .visual {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}
.orbit .visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  opacity: 0.85;
}
.orbit .visual .badge {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(7,13,24,0.85);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: 0.06em;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  font-size: 0.88rem;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-cyan {
  background: var(--cyan);
  color: var(--bg);
}
.btn-cyan:hover { filter: brightness(1.1); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  margin-left: 10px;
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ——— METRIC ROW ——— */
.metrics {
  max-width: 1100px;
  margin: 0 auto 40px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
}
.metric .v {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--cyan);
  margin-bottom: 4px;
}
.metric .l {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ——— STACK GRID ——— */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 24px 56px;
}
.section .label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}
.section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.stack-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.stack-card:hover { border-color: rgba(61,214,245,0.35); }
.stack-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}
.stack-card .body { padding: 20px; }
.stack-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.stack-card p {
  font-size: 0.92rem;
  color: var(--muted);
}

/* ——— LATTICE ——— */
.lattice-top {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 28px;
  text-align: center;
}
.lattice-top .label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}
.lattice-top h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}
.lattice-top p {
  color: var(--muted);
  font-size: 1.08rem;
}
.lattice-img {
  max-width: 900px;
  margin: 0 auto 28px;
  padding: 0 24px;
}
.lattice-img img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.lattice-prose {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px 60px;
}
.lattice-prose p {
  color: var(--muted);
  margin-bottom: 14px;
}

/* ——— UPLINK ——— */
.uplink-grid {
  max-width: 1100px;
  margin: 40px auto 60px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 14px;
}
.uplink-side {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px;
}
.uplink-side h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 20px;
}
.u-row { margin-bottom: 16px; }
.u-row .lbl {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 4px;
}
.u-row p, .u-row a {
  font-size: 0.95rem;
  color: var(--muted);
}
.u-row a:hover { color: var(--cyan); }

.uplink-form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px;
}
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--cyan);
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.ft {
  border-top: 1px solid var(--line);
  padding: 24px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}
.ft strong { color: var(--text); }

@media (max-width: 860px) {
  .chrome nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 12px;
    right: 12px;
    flex-direction: column;
    border-radius: 8px;
  }
  .chrome nav.open { display: flex; }
  .chrome nav a {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .chrome { position: relative; flex-wrap: wrap; }
  .mob { display: block; }
  .chrome .title { text-align: left; flex: 1; }
  .orbit { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .stack-grid { grid-template-columns: 1fr; }
  .uplink-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .lattice-img img { height: 220px; }
}
@media (max-width: 500px) {
  .metrics { grid-template-columns: 1fr; }
}