:root {
  --bg: #070b12;
  --panel: #0e1420;
  --panel-2: #121a28;
  --line: #1b2534;
  --ink: #dce4ee;
  --muted: #8496ab;
  --brand: #4ea1ff;
  --accent: #ff8a5b;
  --ok: #4ade80;
  --bad: #ff6b6b;
  --radius: 14px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55; -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

/* Nav */
header.nav {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(10px);
  background: rgba(7, 11, 18, 0.82); border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 20px; height: 62px; }
.logo { font-weight: 800; letter-spacing: .3px; font-size: 18px; }
.logo .dot { color: var(--brand); }
.nav nav { margin-left: auto; display: flex; gap: 22px; align-items: center; }
.nav nav a { color: var(--muted); font-size: 14px; }
.nav nav a:hover { color: var(--ink); text-decoration: none; }
.btn {
  display: inline-block; background: var(--brand); color: #04101f; font-weight: 700;
  padding: 9px 16px; border-radius: 10px; font-size: 14px; border: 0; cursor: pointer;
}
.btn:hover { text-decoration: none; filter: brightness(1.07); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }

/* Hero */
.hero { padding: 74px 0 46px; }
.eyebrow {
  display: inline-block; font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand); border: 1px solid #22344b; padding: 5px 12px; border-radius: 999px;
  background: rgba(78, 161, 255, 0.06);
}
.hero h1 { font-size: clamp(32px, 5.4vw, 56px); line-height: 1.05; margin: 20px 0 14px; letter-spacing: -0.02em; }
.hero h1 .grad {
  background: linear-gradient(100deg, #4ea1ff, #8ad1ff 55%, #ff8a5b);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lede { font-size: clamp(16px, 2.1vw, 20px); color: #c2cddb; max-width: 720px; }
.hero .cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.install {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 14px; font-size: 14px;
}
.install .prompt { color: var(--muted); }
.install code { color: #a8ffcf; }
.copy { margin-left: 4px; background: transparent; border: 1px solid var(--line); color: var(--muted);
        border-radius: 7px; padding: 3px 9px; cursor: pointer; font-size: 12px; }

/* Sections */
section { padding: 56px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 30px; }
.section-head h2 { font-size: clamp(24px, 3.4vw, 34px); margin: 0 0 10px; letter-spacing: -0.01em; }
.section-head p { color: var(--muted); font-size: 16.5px; margin: 0; }
.kicker { color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }

/* Demo */
.demo-shell { display: grid; grid-template-columns: 1fr 320px; gap: 20px; }
.demo-main { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
#demo-canvas { width: 100%; height: 300px; display: block; background: #0b111c; border-radius: 10px; border: 1px solid var(--line); }
.demo-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.demo-tab { background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); border-radius: 999px;
            padding: 6px 13px; font-size: 13px; cursor: pointer; }
.demo-tab:hover { color: var(--ink); }
.demo-tab.active { background: rgba(78,161,255,0.14); color: #cfe6ff; border-color: #2f4a6b; }
.demo-controls { display: flex; align-items: center; gap: 14px; margin-top: 12px; }
.demo-controls button { background: var(--panel-2); color: var(--ink); border: 1px solid var(--line);
                        border-radius: 9px; padding: 7px 15px; cursor: pointer; font-size: 13px; }
.demo-controls input[type=range] { flex: 1; accent-color: var(--brand); }
.demo-hudrow { display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; margin-top: 8px;
               font-variant-numeric: tabular-nums; }
.demo-side { display: flex; flex-direction: column; gap: 16px; }
.demo-side .card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.demo-side h4 { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
#demo-desc { color: #b7c2d1; font-size: 13.5px; margin: 0; }
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kpi-cell { background: var(--panel-2); border-radius: 9px; padding: 9px 11px; }
.kpi-cell span { display: block; color: var(--muted); font-size: 11.5px; }
.kpi-cell b { font-size: 15px; font-variant-numeric: tabular-nums; }
.verdict { display: inline-block; font-weight: 800; font-size: 12px; padding: 3px 11px; border-radius: 999px; }
.verdict.pass { background: rgba(74,222,128,0.13); color: var(--ok); }
.verdict.fail { background: rgba(255,107,107,0.14); color: var(--bad); }
#demo-verdict ul { list-style: none; margin: 12px 0 0; padding: 0; }
#demo-verdict li { font-size: 13px; padding: 5px 0; border-bottom: 1px solid var(--line); }
#demo-verdict li small { display: block; color: var(--muted); font-size: 11.5px; }
#demo-verdict li.ok { color: #cfeeda; } #demo-verdict li.bad { color: #ffc9c9; }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.feature .ic { font-size: 22px; }
.feature h3 { font-size: 16.5px; margin: 12px 0 7px; }
.feature p { color: var(--muted); font-size: 14px; margin: 0; }

/* Code sample */
.code-shell { display: grid; grid-template-columns: 1.1fr 1fr; gap: 20px; align-items: center; }
pre.code { background: #0a0f18; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px;
           overflow-x: auto; font-size: 13px; line-height: 1.6; margin: 0; }
pre.code .k { color: #7ec7ff; } pre.code .s { color: #a8ffcf; } pre.code .c { color: #5b6b80; }
pre.code .n { color: #ffc08a; }

/* Ladder table */
table.ladder { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.ladder th, table.ladder td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }
table.ladder th { color: var(--muted); font-weight: 600; font-size: 13px; }
table.ladder tr.us td { background: rgba(78,161,255,0.06); }
.pill { font-size: 11.5px; padding: 2px 9px; border-radius: 999px; font-weight: 700; }
.pill.core { background: rgba(78,161,255,0.16); color: #bfe0ff; }
.pill.out { background: rgba(132,150,171,0.12); color: var(--muted); }

/* Pricing */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tier { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.tier.pop { border-color: #2f4a6b; box-shadow: 0 0 0 1px rgba(78,161,255,0.25) inset; }
.tier h3 { margin: 0 0 4px; font-size: 18px; }
.tier .price { font-size: 30px; font-weight: 800; margin: 8px 0; }
.tier .price small { font-size: 13px; color: var(--muted); font-weight: 500; }
.tier ul { list-style: none; padding: 0; margin: 14px 0 20px; flex: 1; }
.tier li { padding: 6px 0; color: #c2cddb; font-size: 14px; border-bottom: 1px solid var(--line); }
.tier li::before { content: "✓"; color: var(--brand); margin-right: 9px; }
.tag { align-self: flex-start; font-size: 11px; font-weight: 700; color: var(--brand);
       background: rgba(78,161,255,0.12); border-radius: 999px; padding: 3px 10px; margin-bottom: 6px; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: 13.5px; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.disclaimer { max-width: 640px; font-size: 12px; color: #64748b; margin-top: 8px; }

@media (max-width: 900px) {
  .demo-shell, .code-shell { grid-template-columns: 1fr; }
  .grid, .tiers { grid-template-columns: 1fr; }
  .nav nav a:not(.btn) { display: none; }
}