:root {
  --bg: #10141c;
  --panel: #171d28;
  --ink: #e7edf6;
  --muted: #8b97a8;
  --line: #2a3344;
  --gold: #e2b340;
  --beam: #6ec4ff;
  --ok: #7ddeb0;
  --font: "Avenir Next", "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
}

body.home {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 20px 36px;
}

.home-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.kicker {
  margin: 0;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 11px;
}

.lang {
  display: grid;
  gap: 3px;
  font-size: 11px;
  color: var(--muted);
}

select,
.btn {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 14px;
  font: inherit;
  text-decoration: none;
}

select:hover,
.btn:hover { border-color: var(--beam); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 28px;
  align-items: center;
  margin-bottom: 42px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  line-height: 1.15;
}

.lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn.primary {
  background: #1d3a52;
  border-color: var(--beam);
  color: #d7efff;
}

.btn.ghost { color: var(--muted); }

.stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  min-height: 220px;
}

.stage-pane {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: radial-gradient(circle at 50% 50%, #1c2432 0%, #10141c 72%);
  min-height: 220px;
}

.beam-line {
  position: absolute;
  left: 8%;
  right: 8%;
  top: 50%;
  height: 2px;
  background: #3d4a5f;
}

.beam-dot {
  position: absolute;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -3px;
  border-radius: 50%;
  background: var(--beam);
  animation: beam 2.4s linear infinite;
}

.target {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  background: #8a949c;
  box-shadow: 0 0 0 8px rgba(138, 148, 156, 0.12);
}

.ring {
  position: absolute;
  inset: 18%;
  border: 8px solid #2c3648;
  border-radius: 50%;
}

.orbit {
  position: absolute;
  inset: 18%;
  animation: spin 4.8s linear infinite;
}

.orbit.gold { animation-direction: reverse; }

.orbit .bunch {
  position: absolute;
  left: calc(50% - 4px);
  top: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--beam);
}

.orbit.gold .bunch { background: var(--gold); }

.stage-label {
  position: absolute;
  left: 12px;
  bottom: 10px;
  color: #c5ceda;
  font-family: var(--mono);
  font-size: 11px;
}

h2 {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 600;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 36px;
}

.steps article,
.split > div,
.warning {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 16px 18px;
}

.step-n {
  margin: 0 0 8px;
  color: var(--beam);
  font-family: var(--mono);
  font-size: 12px;
}

h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.steps p:last-child,
.split p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
  font-size: 14px;
}

.split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12px;
  margin-bottom: 16px;
}

pre {
  margin: 14px 0 0;
  padding: 12px 14px;
  overflow: auto;
  background: #10141c;
  border-radius: 10px;
  color: #cfe6ff;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
}

.warning h2 { color: var(--gold); }

.warning ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.55;
}

footer {
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
}

@keyframes beam {
  from { left: 8%; }
  to { left: calc(92% - 7px); }
}

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

@media (max-width: 820px) {
  .hero,
  .steps,
  .split {
    grid-template-columns: 1fr;
  }

  .stage { min-height: 180px; }
}