:root {
  color-scheme: dark;
  --bg: #07111f;
  --surface: rgba(10, 19, 34, 0.76);
  --text: #f3f7ff;
  --muted: #9fb0cb;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #7cf0cf;
  --accent-strong: #32d7be;
  --accent-warm: #ffd279;
  --accent-cool: #81a8ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  font-family: "Manrope", sans-serif;
  background: var(--bg);
  color: var(--text);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at top left, rgba(50, 215, 190, 0.18), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(255, 210, 121, 0.14), transparent 24%),
    linear-gradient(180deg, #07111f 0%, #091425 45%, #050b15 100%);
  color: var(--text);
}
body::before {
  content: "";
  position: fixed;
  right: -8rem;
  top: 7rem;
  z-index: -1;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 240, 207, 0.18), transparent 65%);
  filter: blur(10px);
}
a { color: inherit; text-decoration: none; }
h1, h2, strong, .eyebrow { font-family: "Space Grotesk", sans-serif; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0 0 16px 16px;
  background: linear-gradient(180deg, rgba(7, 17, 31, 0.92), rgba(7, 17, 31, 0.68));
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 0.9rem; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid rgba(124, 240, 207, 0.4);
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(124, 240, 207, 0.18), rgba(255, 210, 121, 0.14));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  font-weight: 700;
  letter-spacing: 0.08em;
}
.brand-copy { display: flex; flex-direction: column; }
.brand-copy strong { font-size: 0.98rem; letter-spacing: 0.03em; }
.brand-copy span { color: var(--muted); font-size: 0.8rem; }
.site-nav { display: flex; gap: 1.25rem; }
.site-nav a { position: relative; color: #dfe8fb; font-size: 0.92rem; }
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after { transform: scaleX(1); }

.app-shell { width: min(1180px, calc(100vw - 2rem)); margin: 0 auto; padding: 3rem 0 4rem; }
.hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr); gap: 1.25rem; margin-bottom: 1.25rem; }
.hero > div:first-child, .metric-card, .demo-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: radial-gradient(circle at top right, rgba(129, 168, 255, 0.09), transparent 35%), linear-gradient(180deg, rgba(14, 24, 42, 0.92), rgba(9, 16, 30, 0.82));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.hero > div:first-child { padding: clamp(1.7rem, 4vw, 3rem); }
.hero > div:first-child::before, .metric-card::before, .demo-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), transparent 35%, transparent 72%, rgba(124, 240, 207, 0.06));
}
.eyebrow { margin: 0 0 1rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.75rem; }
.hero h1 { margin: 0 0 1rem; max-width: 760px; font-size: clamp(2.25rem, 4.8vw, 4rem); line-height: 0.98; letter-spacing: -0.05em; }
.hero-copy { margin: 0; max-width: 720px; color: var(--muted); line-height: 1.7; }

.metric-card { min-width: 0; padding: 1.45rem; align-self: stretch; }
.metric-row { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-bottom: 0.5rem; }
.metric-label { color: #dfe8fb; font-size: 0.9rem; }
.metric-row strong { font-size: 1rem; }
.meter { width: 100%; height: 0.5rem; margin-bottom: 1rem; overflow: hidden; border-radius: 999px; background: rgba(255, 255, 255, 0.08); }
.meter-fill { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--accent-strong)); transition: width 200ms ease, background 200ms ease; }
.meter-fill.over-limit { background: linear-gradient(90deg, #ff7a68, #e83f4d); }
.status { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.86rem; line-height: 1.6; }

.demo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.demo-panel { padding: 1.25rem; border-radius: 24px; transition: transform 260ms ease, border-color 260ms ease, box-shadow 260ms ease; }
.demo-panel:hover { transform: translateY(-5px); border-color: rgba(124, 240, 207, 0.22); box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42); }
.panel-header { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-bottom: 1rem; }
.panel-header h2 { margin: 0; font-size: 1.05rem; }
.panel-header span { color: var(--accent-warm); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; }
canvas {
  display: block;
  width: 100%;
  height: min(58vh, 520px);
  border: 1px solid rgba(124, 240, 207, 0.18);
  border-radius: 18px;
  background: #07111f;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  cursor: crosshair;
}

@media (max-width: 900px) {
  .hero, .demo-grid { grid-template-columns: 1fr; }
  .site-header { position: static; }
}
@media (max-width: 620px) {
  .site-header { align-items: flex-start; }
  .brand-copy { display: none; }
  .site-nav { flex-wrap: wrap; justify-content: flex-end; gap: 0.8rem 1rem; }
  .app-shell { padding-top: 1.5rem; }
  .hero > div:first-child, .metric-card { border-radius: 26px; }
  .panel-header { align-items: flex-start; flex-direction: column; gap: 0.35rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}