:root {
  color-scheme: dark;
  --bg: #07110f;
  --surface: rgba(14, 31, 27, .72);
  --line: rgba(184, 255, 219, .14);
  --ink: #f2fff9;
  --muted: #98b4a8;
  --mint: #76f8b6;
  --lime: #c7ff67;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(118, 248, 182, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(118, 248, 182, .035) 1px, transparent 1px),
    var(--bg);
  background-size: 64px 64px;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  background: radial-gradient(circle at 50% -20%, rgba(118, 248, 182, .12), transparent 46%);
}

.ambient {
  position: fixed;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: .12;
}

.ambient-one { top: 8%; right: -12rem; background: var(--mint); }
.ambient-two { bottom: -18rem; left: -10rem; background: var(--lime); }

.site-header,
main,
footer {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  font-size: 17px;
  font-weight: 760;
  letter-spacing: -.03em;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  width: 31px;
  height: 31px;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border: 1px solid rgba(118, 248, 182, .32);
  border-radius: 9px;
  background: rgba(118, 248, 182, .08);
}

.brand-mark i {
  width: 3px;
  border-radius: 2px;
  background: var(--mint);
  box-shadow: 0 0 12px rgba(118, 248, 182, .55);
}

.brand-mark i:nth-child(1) { height: 9px; }
.brand-mark i:nth-child(2) { height: 17px; }
.brand-mark i:nth-child(3) { height: 12px; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 13px rgba(118, 248, 182, .8);
}

main {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, .92fr);
  min-height: calc(100vh - 176px);
  align-items: center;
  gap: clamp(42px, 7vw, 100px);
  padding: 72px 0;
}

.eyebrow {
  margin: 0 0 24px;
  color: var(--mint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(54px, 6.2vw, 88px);
  font-weight: 660;
  letter-spacing: -.07em;
  line-height: .98;
}

h1 em {
  color: var(--lime);
  font-style: normal;
}

.intro {
  max-width: 620px;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 15px;
  margin-top: 38px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  border-radius: 999px;
  font-size: 13px;
}

.primary-action {
  gap: 22px;
  padding: 0 20px;
  background: var(--lime);
  color: #07110f;
  font-weight: 720;
}

.primary-action b { font-size: 16px; }

.secondary-action {
  padding: 0 18px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .04em;
}

.signal-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(145deg, rgba(20, 49, 40, .76), rgba(8, 20, 17, .9));
  box-shadow: 0 32px 100px rgba(0, 0, 0, .3);
  backdrop-filter: blur(22px);
}

.signal-head,
.metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.signal-head {
  padding: 20px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .12em;
}

.stack-visual { padding: 40px 38px; }

.stack-layer {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(4, 13, 11, .62);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: .1em;
}

.stack-layer b { color: var(--mint); font-size: 10px; }
.layer-web { border-color: rgba(199, 255, 103, .34); box-shadow: inset 0 0 28px rgba(199, 255, 103, .035); }
.layer-web b { color: var(--lime); }

.connector {
  display: flex;
  height: 27px;
  justify-content: space-around;
  padding: 0 54px;
}

.connector i { width: 1px; background: linear-gradient(var(--line), var(--mint), var(--line)); }

.metrics {
  border-top: 1px solid var(--line);
  padding: 19px 22px 21px;
}

.metrics span { display: grid; gap: 5px; }
.metrics small { color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.metrics strong { font-size: 12px; font-weight: 650; }

footer {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .04em;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; padding: 80px 0; }
  .hero { max-width: 720px; }
  .signal-card { width: min(100%, 620px); }
}

@media (max-width: 560px) {
  .site-header,
  main,
  footer { width: min(100% - 28px, 1180px); }
  .site-header { min-height: 72px; }
  .status { font-size: 9px; }
  main { gap: 52px; padding: 64px 0; }
  h1 { font-size: clamp(45px, 13.5vw, 68px); }
  .intro { font-size: 15px; }
  .stack-visual { padding: 28px 18px; }
  .metrics { gap: 14px; padding-inline: 18px; }
  footer { min-height: 72px; }
  footer span:last-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}