:root {
  --bg: #0b0f0d; --panel: #111a15; --line: #1f3a2c; --text: #e7f5ec; --muted: #9ab4a6;
  --green: #16a34a; --green2: #4ade80;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--green2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
h1, h2, h3 { line-height: 1.15; }
section { padding: 72px 24px; max-width: 1080px; margin: 0 auto; }
h2 { font-size: 2rem; margin: 0 0 8px; text-align: center; }
.band-lead { text-align: center; color: var(--muted); max-width: 680px; margin: 0 auto 36px; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 70% -10%, rgba(74,222,128,.18), transparent), linear-gradient(180deg, #0c1410, #0b0f0d); border-bottom: 1px solid var(--line); }
nav { display: flex; justify-content: space-between; align-items: center; max-width: 1080px; margin: 0 auto; padding: 20px 24px; }
.logo { font-weight: 700; display: inline-flex; align-items: center; gap: 8px; }
.logo .dot { width: 12px; height: 12px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, var(--green2), var(--green)); box-shadow: 0 0 12px rgba(74,222,128,.6); }
.links a { color: var(--text); margin-left: 22px; font-size: .95rem; }
.hero-inner { max-width: 820px; margin: 0 auto; padding: 80px 24px 96px; text-align: center; }
.hero h1 { font-size: 3.2rem; margin: 0 0 20px; letter-spacing: -.02em; }
.hero h1 em { color: var(--green2); font-style: normal; }
.lead { font-size: 1.25rem; color: #cfe7d8; max-width: 680px; margin: 0 auto 32px; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn { padding: 13px 24px; border-radius: 10px; font-weight: 600; display: inline-block; }
.btn.primary { background: var(--green); color: #fff; }
.btn.primary:hover { background: #15912f; text-decoration: none; }
.btn.ghost { border: 1px solid var(--line); color: var(--text); }
.btn.ghost:hover { border-color: var(--green2); text-decoration: none; }
.sub { color: var(--muted); font-size: .9rem; margin-top: 24px; }

/* bands + cards */
.band { border-bottom: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 1.05rem; color: var(--green2); }
.card p { margin: 0; color: var(--muted); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; position: relative; }
.step .num { position: absolute; top: -14px; left: 22px; width: 30px; height: 30px; border-radius: 50%; background: var(--green); color: #fff; display: grid; place-items: center; font-weight: 700; }
.step h3 { margin: 14px 0 8px; }
.step p { color: var(--muted); margin: 0 0 14px; }
pre { background: #06100b; border: 1px solid var(--line); border-radius: 10px; padding: 14px; overflow-x: auto; font-size: .82rem; }
pre code { color: #bfe9cd; }

/* demo */
.demo { text-align: center; }
.video-wrap { max-width: 900px; margin: 8px auto 12px; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: #000; }
.video-wrap video { width: 100%; display: block; }
.caption { color: var(--muted); font-size: .9rem; }

/* split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.split-text h2 { text-align: left; }
.split-text ul { color: var(--muted); padding-left: 18px; }
.split-img img { width: 100%; border: 1px solid var(--line); border-radius: 14px; }

footer { text-align: center; padding: 40px 24px; color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 820px) {
  .hero h1 { font-size: 2.2rem; }
  .cards, .steps, .split { grid-template-columns: 1fr; }
  .split-text h2 { text-align: center; }
}