:root {
  color-scheme: dark;
  --bg: #020704;
  --surface: #08110a;
  --surface-2: #0d1a10;
  --green: #39ff14;
  --green-soft: #b7ffa8;
  --text: #f4f7f4;
  --muted: #b8c3ba;
  --line: #235c2b;
  --max: 1120px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 12%, rgba(57, 255, 20, .09), transparent 26rem),
    linear-gradient(180deg, #020704 0%, #050a06 100%);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--green-soft); }
a:hover { color: var(--green); }
a:focus-visible, button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: .75rem 1rem;
  background: #fff;
  color: #000;
  border-radius: .4rem;
}
.skip-link:focus { top: 1rem; }

.hero {
  width: min(var(--max), calc(100% - 2rem));
  margin: 1rem auto 0;
  text-align: center;
}

.hero-art {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  box-shadow: 0 0 44px rgba(57, 255, 20, .11);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .8rem;
  margin-top: 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: .8rem 1.2rem;
  border: 1px solid var(--green);
  border-radius: 999px;
  color: var(--green);
  font-weight: 800;
  text-decoration: none;
}
.button:hover { background: rgba(57, 255, 20, .1); }
.button-primary { background: var(--green); color: #031004; }
.button-primary:hover { background: #7dff64; color: #031004; }
.download-note { color: var(--muted); font-size: .94rem; }

main, footer {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

section { margin-block: 4.5rem; }

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr);
  align-items: center;
  gap: 2.5rem;
}

.eyebrow {
  margin: 0 0 .55rem;
  color: var(--green);
  font-size: .82rem;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1, h2 {
  margin-top: 0;
  line-height: 1.12;
  letter-spacing: -.025em;
}
h1 { max-width: 18ch; font-size: clamp(2.3rem, 6vw, 4.8rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.7rem); }

.lede { max-width: 65ch; color: #d7dfd8; font-size: 1.13rem; }
.feature-list { columns: 2; padding-left: 1.2rem; }
.feature-list li::marker, .panel li::marker { color: var(--green); }

.icon-card {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.panel {
  padding: clamp(1.3rem, 4vw, 2.5rem);
  background: linear-gradient(145deg, rgba(13, 26, 16, .96), rgba(5, 12, 7, .96));
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.steps {
  display: grid;
  gap: .85rem;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}
.steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem;
  background: rgba(0, 0, 0, .26);
  border: 1px solid rgba(57, 255, 20, .2);
  border-radius: .8rem;
}
.step-number {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--green);
  border-radius: 50%;
  color: var(--green);
  font-weight: 900;
}

code {
  padding: .12rem .4rem;
  border: 1px solid #315b36;
  border-radius: .35rem;
  background: #020503;
  color: #eaffea;
  overflow-wrap: anywhere;
}

.keep-folder, .notice {
  margin-top: 1.3rem;
  padding: 1rem 1.15rem;
  border-left: .3rem solid var(--green);
  background: rgba(57, 255, 20, .08);
}

.demo img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.notice { border: 1px solid #82721b; border-left: .3rem solid #ffe145; }
.notice h2 { font-size: 1.45rem; }

footer {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 5rem;
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
footer p { margin: 0; }

@media (max-width: 760px) {
  .intro, .two-column { grid-template-columns: 1fr; }
  .intro { gap: 1.4rem; }
  .icon-card { max-width: 440px; }
  .feature-list { columns: 1; }
  section { margin-block: 3.2rem; }
}

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