:root {
  color-scheme: dark;
  --bg: #090b0f;
  --surface: #111722;
  --surface-2: #151d2a;
  --border: #283245;
  --text: #f3f7fb;
  --muted: #a6b0c1;
  --faint: #778399;
  --accent: #19b8ff;
  --accent-2: #dfe8f5;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }
html { margin: 0; background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: inherit; }
p, h1, h2, h3 { margin-top: 0; }
h1, h2, h3 { letter-spacing: 0; }
h1 { max-width: 760px; margin-bottom: 1rem; font-size: clamp(2.55rem, 7vw, 5.7rem); line-height: 0.96; }
h2 { margin-bottom: 0.9rem; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.02; }
h3 { margin-bottom: 0.55rem; font-size: 1.04rem; }
p { color: var(--muted); line-height: 1.65; }

.site-header {
  position: fixed;
  z-index: 5;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 4vw, 3rem);
  background: rgba(9, 11, 15, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-weight: 800;
}
.brand img {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border);
}

nav { display: flex; gap: 1rem; }
nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}
nav a:hover { color: var(--text); }

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 7.5rem clamp(1.1rem, 5vw, 5rem) 4rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("./assets/logo.png");
  background-position: right 2vw center;
  background-size: min(78vw, 900px);
  background-repeat: no-repeat;
  opacity: 0.44;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(9, 11, 15, 0.58);
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(860px, 100%);
}
.hero-copy {
  max-width: 620px;
  margin-bottom: 1.55rem;
  color: var(--accent-2);
  font-size: 1.1rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.button, button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.78rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.button:active, button:active { transform: translateY(1px); }
.button.primary, button {
  background: var(--accent);
  color: #041018;
  border-color: rgba(25, 184, 255, 0.65);
}
.button.secondary {
  background: rgba(17, 23, 34, 0.82);
  color: var(--text);
}
.button[aria-disabled="true"] {
  cursor: not-allowed;
  color: var(--faint);
  background: #121820;
}

.section {
  padding: clamp(3.5rem, 7vw, 6.5rem) clamp(1.1rem, 5vw, 5rem);
  border-bottom: 1px solid var(--border);
}
.section-head {
  max-width: 760px;
  margin-bottom: 2rem;
}
.eyebrow {
  margin-bottom: 0.5rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.steps article, .purchase-form, .license-summary {
  min-height: 100%;
  padding: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.steps span {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  margin-bottom: 1rem;
  place-items: center;
  border-radius: 999px;
  background: rgba(25, 184, 255, 0.13);
  color: var(--accent);
  font-weight: 900;
}
.steps p, .license-summary li { margin-bottom: 0; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start;
}
.plain-copy { max-width: 720px; }

.purchase-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1rem;
  align-items: stretch;
}
form { display: grid; gap: 0.9rem; }
label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 800;
}
input {
  width: 100%;
  min-height: 2.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0b1018;
  color: var(--text);
  padding: 0.75rem 0.8rem;
  font: inherit;
}
input:focus {
  outline: 2px solid rgba(25, 184, 255, 0.4);
  border-color: rgba(25, 184, 255, 0.75);
}
.form-status {
  min-height: 1.5rem;
  margin: 0;
  color: var(--accent-2);
}
.price {
  margin: 0 0 1rem;
  color: var(--text);
  font-size: 3rem;
  font-weight: 900;
}
ul {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.download-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--surface-2);
}
.download-band div { max-width: 720px; }
footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem clamp(1.1rem, 5vw, 5rem);
  color: var(--faint);
  font-size: 0.9rem;
}

@media (max-width: 820px) {
  .site-header { position: sticky; align-items: flex-start; flex-direction: column; }
  nav { width: 100%; justify-content: space-between; gap: 0.5rem; }
  .hero { min-height: 86vh; padding-top: 4.5rem; }
  .hero-bg { background-position: center 42%; background-size: 115vw; opacity: 0.24; }
  .steps, .split, .purchase-layout { grid-template-columns: 1fr; }
  .download-band, footer { align-items: flex-start; flex-direction: column; }
}