:root {
  --background: #050505;
  --foreground: #ffffff;
  --dim: rgba(255, 255, 255, 0.84);
  --muted: rgba(255, 255, 255, 0.62);
  --cyan: #00f1f1;
  --red: #ff2d2d;
  --panel: rgba(4, 4, 4, 0.78);
  --border: rgba(255, 255, 255, 0.2);
  --shadow: rgba(0, 0, 0, 0.55);
  --max-width: 980px;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100%;
  margin: 0;
  color: var(--foreground);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background-color: var(--background);
  background-image:
    radial-gradient(circle at 50% 18%, rgba(0, 241, 241, 0.16), transparent 30rem),
    linear-gradient(rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.93)),
    url("logo.png");
  background-position: center, center, center;
  background-size: cover, cover, min(92vw, 980px);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

a:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(0, 0, 0, 0.76);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 13px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--foreground);
  font-weight: 780;
  letter-spacing: 0.1px;
}

.logo {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 5px 18px var(--shadow);
}

.spacer { flex: 1; }

.links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.links a {
  color: var(--foreground);
  opacity: 0.82;
}

.links a.active {
  color: var(--cyan);
  opacity: 1;
}

main { display: block; }

.hero {
  max-width: var(--max-width);
  margin: 44px auto 0;
  padding: 34px 20px 22px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.17em;
}

.hero h1 {
  max-width: 760px;
  margin: 0 0 10px;
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.lead {
  max-width: 720px;
  margin: 0;
  color: var(--dim);
  font-size: clamp(17px, 2.5vw, 21px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-block;
  padding: 10px 15px;
  color: var(--foreground);
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.button:hover {
  background: rgba(255, 255, 255, 0.13);
  text-decoration: none;
}

.button.primary {
  color: #001414;
  border-color: var(--cyan);
  background: var(--cyan);
}

.section {
  max-width: var(--max-width);
  margin: 22px auto;
  padding: clamp(20px, 4vw, 30px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 14px 42px var(--shadow);
  backdrop-filter: blur(10px);
}

.section h2 {
  margin: 0 0 10px;
  font-size: clamp(23px, 4vw, 31px);
}

.section h3 {
  margin: 0 0 5px;
  font-size: 18px;
}

.section p { margin: 8px 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.grid article {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.055);
}

.grid article:nth-child(2) { border-top-color: var(--red); }
.grid article:nth-child(3) { border-top-color: var(--cyan); }

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  list-style: none;
}

.steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.055);
}

.steps li > span {
  display: grid;
  flex: 0 0 30px;
  height: 30px;
  place-items: center;
  color: #001414;
  background: var(--cyan);
  border-radius: 50%;
  font-weight: 850;
}

.steps p { margin: 1px 0 0; }

.small {
  color: var(--muted);
  font-size: 13px;
}

.footer {
  max-width: var(--max-width);
  margin: 32px auto 42px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

@media (max-width: 720px) {
  .brand span { max-width: 150px; line-height: 1.15; }
  .grid, .steps { grid-template-columns: 1fr; }
  .hero { margin-top: 22px; }
  .section { margin-inline: 12px; }
}

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