:root {
  --bg: #07110f;
  --panel: #0d1d19;
  --ink: #ecfff8;
  --muted: #9eb8af;
  --line: rgba(145, 255, 216, 0.18);
  --green: #54f0a7;
  --cyan: #4bd8ff;
  --amber: #ffcf6a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(84, 240, 167, 0.18), transparent 28%),
    radial-gradient(circle at 80% 0%, rgba(75, 216, 255, 0.16), transparent 25%),
    linear-gradient(135deg, #06100f 0%, #07110f 48%, #10150c 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 15, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(84, 240, 167, 0.55);
  background: linear-gradient(135deg, rgba(84, 240, 167, 0.24), rgba(75, 216, 255, 0.08));
  color: var(--green);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover {
  color: var(--green);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  min-height: calc(100vh - 81px);
  padding: clamp(56px, 8vw, 104px) clamp(20px, 6vw, 88px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 92px);
  line-height: 0.95;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.lead {
  max-width: 690px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  font-weight: 800;
}

.button.primary {
  border-color: rgba(84, 240, 167, 0.7);
  background: var(--green);
  color: #06100f;
}

.button.secondary {
  color: var(--green);
}

.signal-panel {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(84, 240, 167, 0.28);
  background:
    linear-gradient(rgba(84, 240, 167, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 240, 167, 0.06) 1px, transparent 1px),
    rgba(13, 29, 25, 0.72);
  background-size: 28px 28px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.36);
}

.signal-panel::after {
  content: "";
  position: absolute;
  inset: auto -20% -30% 20%;
  height: 180px;
  background: linear-gradient(90deg, transparent, rgba(75, 216, 255, 0.28), transparent);
  transform: rotate(-8deg);
  animation: sweep 4s linear infinite;
}

.panel-top,
.metric-grid {
  position: relative;
  z-index: 1;
}

.panel-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.panel-top strong {
  color: var(--green);
}

.chart {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  align-items: end;
  gap: 12px;
  height: 300px;
  padding: 38px 0;
}

.chart span {
  display: block;
  height: var(--h);
  background: linear-gradient(180deg, var(--cyan), var(--green));
  opacity: 0.86;
  transform-origin: bottom;
  animation: pulse 2.6s ease-in-out infinite;
}

.chart span:nth-child(2n) {
  animation-delay: 300ms;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.metric-grid div {
  padding: 16px;
  background: rgba(7, 17, 15, 0.82);
}

.metric-grid small {
  display: block;
  color: var(--muted);
}

.metric-grid strong {
  display: block;
  margin-top: 8px;
  color: var(--ink);
  font-size: 20px;
}

.section,
.band,
.contact,
footer {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 6vw, 88px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cards article {
  padding: clamp(24px, 4vw, 40px);
  background: rgba(13, 29, 25, 0.86);
}

.cards span {
  display: block;
  margin-bottom: 42px;
  color: var(--amber);
  font-weight: 900;
}

.cards p,
.split p,
.steps span {
  color: var(--muted);
}

.band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  background: rgba(84, 240, 167, 0.07);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.steps strong {
  color: var(--green);
}

.split,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.contact {
  align-items: center;
  border-top: 1px solid var(--line);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@keyframes pulse {
  0%, 100% { transform: scaleY(0.86); opacity: 0.72; }
  50% { transform: scaleY(1); opacity: 1; }
}

@keyframes sweep {
  from { transform: translateX(-30%) rotate(-8deg); }
  to { transform: translateX(90%) rotate(-8deg); }
}

@media (max-width: 860px) {
  .site-header,
  .nav,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .band,
  .split,
  .contact,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .signal-panel {
    min-width: 0;
  }
}

@media (max-width: 520px) {
  .nav {
    gap: 12px;
    font-size: 13px;
  }

  .steps li,
  .metric-grid {
    grid-template-columns: 1fr;
  }
}