:root {
  --bg: #07080c;
  --bg-2: #0c0e14;
  --surface: #10131a;
  --line: rgba(232, 234, 223, 0.1);
  --text: #e8eadf;
  --muted: #8b90a0;
  --mint: #3dffc0;
  --mint-dim: rgba(61, 255, 192, 0.14);
  --violet: #7c5cff;
  --warn: #ffb020;
  --font: "Instrument Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(900px 480px at 80% -10%, rgba(124, 92, 255, 0.18), transparent 55%),
    radial-gradient(700px 420px at 10% 10%, rgba(61, 255, 192, 0.12), transparent 50%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); }
.bg-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(232,234,223,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,234,223,0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 20%, transparent 70%);
}
.nav, main, .foot { position: relative; z-index: 1; }
.nav {
  display: flex; align-items: center; gap: 24px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(7,8,12,0.8);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta { display: flex; gap: 10px; margin-left: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; padding: 10px 16px; font-weight: 600;
  border: 1px solid var(--line); color: var(--text);
}
.btn:hover { text-decoration: none; }
.btn.primary { background: var(--mint); color: #06281d; border-color: transparent; }
.btn.ghost { background: transparent; }
.btn.lg { padding: 14px 22px; font-size: 1.02rem; }
.hero { padding: 88px 32px 48px; max-width: 980px; margin: 0 auto; text-align: center; }
.eyebrow {
  color: var(--mint); text-transform: uppercase; letter-spacing: 0.16em;
  font-size: 0.72rem; font-weight: 650; margin: 0 0 16px;
}
h1, h2, h3 { letter-spacing: -0.035em; line-height: 1.08; }
h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); margin: 0 0 20px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin: 0 0 12px; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 720px; margin: 0 auto 28px; }
.lede strong { color: var(--text); }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-pills { list-style: none; padding: 0; margin: 28px 0 0; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.hero-pills li {
  border: 1px solid var(--line); background: var(--surface);
  padding: 6px 12px; border-radius: 999px; font-family: var(--mono); font-size: 0.8rem; color: var(--muted);
}
.strip {
  max-width: 1080px; margin: 24px auto; padding: 0 32px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.strip div {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px;
}
.strip span { display: block; font-size: 1.4rem; font-weight: 700; }
.strip small { color: var(--muted); }
.section { max-width: 1080px; margin: 0 auto; padding: 72px 32px; }
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head p:not(.eyebrow) { color: var(--muted); }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.steps .n { font-family: var(--mono); color: var(--violet); font-size: 0.8rem; }
.steps h3 { margin: 10px 0 8px; }
.steps p { margin: 0; color: var(--muted); }
.split-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 36px; align-items: start; }
.ticks { padding: 0; margin: 18px 0 24px; list-style: none; }
.ticks li { position: relative; padding: 6px 0 6px 22px; color: var(--muted); }
.ticks li::before { content: ""; position: absolute; left: 0; top: 14px; width: 8px; height: 8px; border-radius: 99px; background: var(--mint); }
.code-panel {
  background: #08090d; border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
}
.code-panel header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--muted);
  font-family: var(--mono); font-size: 0.75rem;
}
.dots { width: 10px; height: 10px; border-radius: 99px; background: var(--mint); box-shadow: 16px 0 0 var(--violet), 32px 0 0 var(--warn); margin-right: 28px; }
.code-panel pre { margin: 0; padding: 16px 18px; font-size: 0.78rem; overflow-x: auto; color: #cfd3c4; }
.code-panel .out { background: #0b0d12; border-top: 1px solid var(--line); color: var(--mint); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; }
.cmp { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.cmp th, .cmp td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.cmp th { color: var(--muted); font-weight: 560; }
.cmp .hi { color: var(--mint); font-weight: 650; }
.fine { color: var(--muted); font-size: 0.88rem; margin-top: 12px; }
.calc { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 28px; }
.calc label { display: block; color: var(--muted); margin-bottom: 12px; }
.calc input[type="range"] { width: 100%; accent-color: var(--mint); }
.calc-readout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
.calc-readout small { color: var(--muted); display: block; }
.calc-readout strong { font-size: 1.4rem; }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feat-grid article { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.feat-grid p { color: var(--muted); margin: 8px 0 0; }
.faq-list details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq-list summary { cursor: pointer; font-weight: 600; }
.faq-list p { color: var(--muted); margin: 8px 0 0; }
.cta-band {
  margin: 20px 32px 80px; padding: 48px 32px; text-align: center;
  border: 1px solid var(--line); border-radius: 24px;
  background: linear-gradient(180deg, var(--mint-dim), transparent 70%);
}
.cta-band p { color: var(--muted); }
.foot {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px;
  padding: 48px 32px 24px; border-top: 1px solid var(--line); color: var(--muted);
}
.foot a { display: block; color: var(--muted); margin: 6px 0; }
.foot h4 { color: var(--text); margin: 0 0 8px; font-size: 0.9rem; }
.foot .copy { grid-column: 1 / -1; font-size: 0.8rem; }
.doc h1 { font-size: 2.2rem; }
.doc-wrap { max-width: 860px; margin: 0 auto; padding: 56px 32px 96px; }
.doc-wrap h2 { margin-top: 40px; }
.doc-wrap p, .doc-wrap li { color: var(--muted); }
.doc-wrap table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; }
.doc-wrap th, .doc-wrap td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; vertical-align: top; color: var(--text); font-size: 0.92rem; }
.doc-wrap pre {
  background: #08090d; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; overflow-x: auto; color: #cfd3c4; font-size: 0.82rem;
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .strip, .steps, .split-grid, .feat-grid, .calc-readout, .foot { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
}