:root {
  --bg: #070b14;
  --bg-alt: #0a0e17;
  --ink: #e6e8ee;
  --muted: #a9b0c2;
  --c-red: #b22234;
  --c-blue: #0d5da1;
  --c-white: #ffffff;
  --card: #0c1220;
  --card-border: #162032;
  --accent: linear-gradient(90deg, var(--c-blue), var(--c-red));
  --shadow: 0 10px 40px rgba(0,0,0,.45);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #0b1220;
    --bg-alt: #0d1526;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--ink);
  background: radial-gradient(1200px 800px at 50% -10%, #0d1730 0%, var(--bg) 60%);
}

.site-header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: saturate(140%) blur(8px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid #0f192c;
}
.site-nav {
  max-width: 1200px; margin: 0 auto; padding: .6rem 1rem;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  text-decoration: none; color: var(--ink); font-weight: 700; letter-spacing: .3px;
}
.brand-mark { font-size: 1.25rem; background: var(--accent); -webkit-background-clip: text; background-clip: text; color: transparent; }
.theme-toggle {
  border: 1px solid #1a2741; background: #0b1324; color: var(--ink);
  padding: .4rem .6rem; border-radius: 10px; cursor: pointer;
}

.flow > .scene { min-height: 90dvh; display: grid; place-items: center; padding: clamp(2rem, 6vw, 5rem) 1rem; position: relative; }
.scene--hero   { min-height: 95dvh; }
.scene--title  { min-height: 40dvh; }
.scene--panel  { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%); }
.scene--cta    { min-height: 70dvh; }

.display {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.1; letter-spacing: .2px; margin: 0 0 .8rem;
}
.eyebrow { text-transform: uppercase; letter-spacing: .22em; color: var(--muted); margin: 0 0 .4rem; font-size: .85rem; }
.title { margin: 0; font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
.sub { color: var(--muted); margin-top: .5rem; }

.lede { color: var(--muted); max-width: 60ch; }
.accent { background: var(--accent); -webkit-background-clip: text; background-clip: text; color: transparent; }

.cta {
  display: inline-block; margin-top: 1rem; color: var(--c-white); text-decoration: none; font-weight: 600;
  padding: .7rem 1rem; border-radius: 12px; border: 1px solid #1a2741; box-shadow: var(--shadow);
  background: linear-gradient(180deg, #0f1a33, #0b1324);
}
.cta:hover { border-color: #28406d; }

.hero-wrap { max-width: 1000px; text-align: center; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }

.panel {
  display: grid; gap: clamp(1rem, 3vw, 2rem);
  width: min(1200px, 94vw);
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  background: linear-gradient(180deg, #0e1527, #0a0e17);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: clamp(1rem, 3.5vw, 2rem);
  box-shadow: var(--shadow);
}
.panel-visual { min-height: 380px; background: radial-gradient(600px 400px at 30% 20%, #0f1b36 0%, transparent 60%); border-radius: 14px; position: relative; }
.panel-text h4 { margin: 0 0 .5rem; font-size: clamp(1.25rem, 2.8vw, 1.6rem); }
.panel-text p { margin: .4rem 0; }
.note { color: var(--muted); font-size: .95rem; }

.site-footer {
  border-top: 1px solid #0f192c;
  color: var(--muted);
  text-align: center;
  padding: 2rem 1rem 3rem;
  background: linear-gradient(180deg, var(--bg-alt), #070b14);
}

/* Reveal animations */
.observe { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.observe.is-inview[data-anim="fadeUp"] { opacity: 1; transform: translateY(0); }
.observe.is-inview[data-anim="drawIn"] { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .observe { transition: none; transform: none; opacity: 1; }
}

@media (max-width: 900px) {
  .panel { grid-template-columns: 1fr; }
  .panel-visual { order: -1; min-height: 300px; }
}