:root {
  --bg: #0d0f14;
  --bg-alt: #12151c;
  --panel: #181b24;
  --line: #262a36;
  --text: #eceef4;
  --muted: #9aa0b2;
  --accent: #8b7cff;
  --accent-2: #4fd1c5;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
h2 { font-size: clamp(28px, 4vw, 40px); text-align: center; margin-bottom: 40px; }
h3 { font-size: 19px; }
p { margin: 0; }

.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }

/* Nav */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(13, 15, 20, .82); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--text); text-decoration: none; }
.brand.small { font-size: 16px; }
.logo { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, #5b8cff, var(--accent)); color: #fff; font-weight: 800; font-size: 16px; }
.brand.small .logo { width: 24px; height: 24px; font-size: 13px; border-radius: 6px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border-radius: 999px; font-weight: 700; text-decoration: none; transition: transform .15s, box-shadow .15s, background .15s; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 30px -8px rgba(139, 124, 255, .6); }
.btn-primary:hover { background: #9b8eff; transform: translateY(-1px); box-shadow: 0 12px 36px -8px rgba(139, 124, 255, .75); }
.btn-small { padding: 8px 18px; font-size: 14px; }
.btn-big { padding: 16px 32px; font-size: 18px; }

/* Hero */
.hero { padding: 88px 0 72px; text-align: center; background: radial-gradient(900px 480px at 50% -10%, rgba(139, 124, 255, .22), transparent 70%); }
.eyebrow { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 14px; font-weight: 600; margin-bottom: 24px; }
.hero h1 { font-size: clamp(42px, 7vw, 76px); font-weight: 800; letter-spacing: -0.035em; }
.grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { max-width: 640px; margin: 24px auto 0; color: var(--muted); font-size: 19px; }
.cta { margin-top: 36px; display: grid; justify-items: center; gap: 14px; }
.cta-meta { color: var(--muted); font-size: 14px; }
.hero-shot { margin-top: 56px; }

.shot { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--panel); box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .8), 0 0 0 6px rgba(255, 255, 255, .02); }

/* Sections */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.steps li { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: grid; gap: 10px; align-content: start; }
.steps p { color: var(--muted); font-size: 16px; }
.num { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: rgba(139, 124, 255, .15); color: var(--accent); font-weight: 800; margin-bottom: 6px; }

.split { display: grid; grid-template-columns: 1.35fr 1fr; gap: 48px; align-items: center; }
.split + .split { margin-top: 72px; }
.split.reverse .shot { order: 2; }
.features { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.features li { color: var(--muted); padding-left: 28px; position: relative; font-size: 16px; }
.features li::before { content: ""; position: absolute; left: 0; top: 7px; width: 14px; height: 14px; border-radius: 4px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.features b { color: var(--text); }

.install { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 14px; }
.install li { counter-increment: step; position: relative; padding: 20px 22px 20px 70px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); display: grid; gap: 6px; }
.install li::before { content: counter(step); position: absolute; left: 22px; top: 20px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; font-size: 15px; }
.install p { color: var(--muted); font-size: 16px; }
.needs { margin-top: 32px; padding: 24px; border: 1px dashed var(--line); border-radius: var(--radius); }
.needs ul { margin: 12px 0 0; padding-left: 20px; color: var(--muted); font-size: 16px; display: grid; gap: 6px; }

details { border-bottom: 1px solid var(--line); padding: 18px 0; }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin-top: 10px; color: var(--muted); font-size: 16px; }

.final { text-align: center; background: radial-gradient(700px 360px at 50% 120%, rgba(139, 124, 255, .2), transparent 70%); }
.final h2 { margin-bottom: 32px; }
.final .cta-meta { margin-top: 14px; }

.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-inner .btn { margin-left: auto; }
  .steps { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.reverse .shot { order: 0; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 64px 0; }
  .btn-big { width: 100%; max-width: 360px; }
}