:root {
  --bg-0: #030809;
  --bg-1: #050d0f;
  --line: rgba(126, 200, 188, 0.14);
  --line-2: rgba(126, 200, 188, 0.24);
  --txt-0: #edfaf6;
  --txt-1: #cfe2de;
  --txt-2: #8fa9a4;
  --green: #3ff09a;
  --cyan: #3ad8e6;
  --f-display: "Saira", "Segoe UI", system-ui, sans-serif;
  --f-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --maxw: 1100px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(120% 90% at 50% -10%, #071b1c 0%, var(--bg-1) 42%, var(--bg-0) 100%);
  color: var(--txt-1);
  font-family: var(--f-body);
  overflow-x: hidden;
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--bg-1); color: var(--txt-0); padding: 10px 16px; z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- header ---------- */
header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center;
  backdrop-filter: blur(14px) saturate(1.3);
  background: rgba(3, 8, 9, 0.6);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  width: 100%; max-width: var(--maxw); margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 30px; height: 30px; display: block; }
.brand__name {
  font-family: var(--f-display); font-weight: 700; letter-spacing: 0.01em;
  font-size: 1.15rem; color: var(--txt-0);
}
.header__cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  color: #04140f; font-weight: 700; font-size: 0.92rem;
  text-decoration: none; transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
  box-shadow: 0 8px 26px -12px rgba(63, 240, 154, 0.5);
}
.header__cta:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -10px rgba(63, 240, 154, 0.62); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  max-width: var(--maxw); margin: 0 auto;
  padding: 64px 24px 96px;
  display: grid; gap: 48px;
  min-height: calc(100vh - var(--header-h));
  align-content: center;
}
@media (min-width: 880px) {
  .hero { grid-template-columns: 1.05fr 0.95fr; align-items: center; gap: 24px; }
}

.eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--cyan); margin-bottom: 14px;
}
h1 {
  font-family: var(--f-display); font-weight: 700; line-height: 1.06;
  font-size: clamp(2.1rem, 5vw, 3.4rem); color: var(--txt-0); margin: 0 0 20px;
  letter-spacing: -0.01em;
}
h1 em { font-style: normal; color: var(--green); }
.hero__lead {
  font-size: 1.05rem; line-height: 1.6; color: var(--txt-2);
  max-width: 46ch; margin: 0 0 32px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 12px;
  font-weight: 700; font-size: 0.98rem; text-decoration: none;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), background 180ms var(--ease);
}
.btn--primary {
  background: linear-gradient(135deg, var(--green), var(--cyan));
  color: #04140f;
  box-shadow: 0 14px 40px -14px rgba(63, 240, 154, 0.55);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 48px -12px rgba(63, 240, 154, 0.65); }
.btn--ghost {
  background: var(--bg-elev, rgba(255,255,255,0.03));
  border: 1px solid var(--line-2); color: var(--txt-0);
}
.btn--ghost:hover { border-color: var(--green); color: var(--green); }
.btn .ico { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.hero__orb {
  position: relative; width: 100%; aspect-ratio: 1 / 1;
  max-width: 460px; justify-self: center;
}
#orb { width: 100%; height: 100%; display: block; }

footer {
  text-align: center; padding: 28px 24px 40px;
  color: var(--txt-2); font-size: 0.82rem;
  border-top: 1px solid var(--line);
}
footer a { color: var(--cyan); text-decoration: none; }
footer a:hover { text-decoration: underline; }

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