:root {
  --bg: #07100e;
  --surface: #0d1916;
  --surface-2: #12231e;
  --ink: #ecfff7;
  --muted: #9eb8ae;
  --line: rgba(198, 255, 228, .14);
  --accent: #8cffc8;
  --accent-2: #4de7ff;
  --warning: #ffd88c;
  --max: 1180px;
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 0%, rgba(77, 231, 255, .12), transparent 30rem),
    radial-gradient(circle at 10% 12%, rgba(140, 255, 200, .10), transparent 25rem),
    var(--bg);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 99; background: var(--accent); color: #04100c; padding: 8px 12px; }
.notice { padding: 8px 20px; text-align: center; color: var(--muted); border-bottom: 1px solid var(--line); font-size: 13px; }
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--line); background: rgba(7, 16, 14, .84); backdrop-filter: blur(18px); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--accent); border-radius: 10px; color: var(--accent); font: 700 13px/1 ui-monospace, monospace; box-shadow: inset 0 0 18px rgba(140,255,200,.08); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-toggle { display: none; border: 1px solid var(--line); background: transparent; color: var(--ink); padding: 8px 10px; border-radius: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 19px; border: 1px solid var(--accent); border-radius: 999px; color: #07100e; background: var(--accent); font-weight: 750; text-decoration: none; cursor: pointer; transition: .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(140,255,200,.15); }
.button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }
.button.small { min-height: 38px; padding-inline: 15px; font-size: 14px; }
.hero { min-height: 710px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 70px; padding: 90px 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--accent); font: 700 12px/1.2 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.045em; margin: 0; }
h1 { margin-top: 24px; font-size: clamp(50px, 7vw, 90px); max-width: 800px; }
.page-hero h1 { font-size: clamp(43px, 6vw, 72px); }
h2 { font-size: clamp(34px, 4vw, 54px); }
h3 { font-size: 22px; }
.lede { max-width: 700px; margin: 25px 0 0; color: var(--muted); font-size: clamp(18px, 2vw, 22px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.micro { margin-top: 16px; color: var(--muted); font-size: 13px; }
.decision-card { position: relative; padding: 28px; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(150deg, rgba(18,35,30,.96), rgba(8,19,16,.82)); box-shadow: 0 30px 90px rgba(0,0,0,.25); overflow: hidden; }
.decision-card::after { content: ""; position: absolute; inset: auto -30% -40% 20%; height: 200px; background: radial-gradient(circle, rgba(140,255,200,.16), transparent 68%); }
.terminal-top { display: flex; justify-content: space-between; color: var(--muted); font: 12px ui-monospace, monospace; }
.state { margin: 28px 0 20px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; color: #cde4da; font: 14px/1.6 ui-monospace, monospace; background: rgba(0,0,0,.16); }
.result { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.result strong { color: var(--accent); font: 700 14px ui-monospace, monospace; }
.prob { color: var(--accent-2); font: 700 14px ui-monospace, monospace; }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 26px; }
.metric { padding: 14px; border: 1px solid var(--line); border-radius: 14px; }
.metric b { display: block; color: var(--accent); font-size: 19px; }
.metric span { color: var(--muted); font-size: 11px; }
.section { padding: 105px 0; }
.section.compact { padding: 70px 0; }
.section-head { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-bottom: 45px; }
.section-head p { max-width: 520px; margin: 0; color: var(--muted); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(13,25,22,.74); }
.card p { color: var(--muted); }
.card .num { color: var(--accent); font: 13px ui-monospace, monospace; }
.card-link { text-decoration: none; transition: .2s ease; }
.card-link:hover { border-color: rgba(140,255,200,.5); transform: translateY(-3px); }
.compare { width: 100%; border-collapse: collapse; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(13,25,22,.7); }
.compare th, .compare td { padding: 19px 22px; text-align: left; border-bottom: 1px solid var(--line); }
.compare th { color: var(--accent); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.compare td:first-child { font-weight: 700; }
.compare td:not(:first-child) { color: var(--muted); }
.video-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 34px; align-items: center; }
.video-frame { min-height: 430px; display: grid; place-items: center; padding: 22px; border: 1px solid var(--line); border-radius: 28px; background: #fff; color: #111; overflow: hidden; }
.video-frame blockquote { width: 100% !important; }
.steps { counter-reset: steps; display: grid; gap: 18px; margin-top: 32px; }
.step { position: relative; padding-left: 46px; }
.step::before { counter-increment: steps; content: "0" counter(steps); position: absolute; left: 0; top: 1px; color: var(--accent); font: 700 13px ui-monospace, monospace; }
.step p { margin: 3px 0 0; color: var(--muted); }
.callout { padding: 44px; border: 1px solid rgba(140,255,200,.3); border-radius: 28px; background: linear-gradient(120deg, rgba(140,255,200,.09), rgba(77,231,255,.05)); }
.callout p { color: var(--muted); max-width: 720px; }
.page-hero { padding: 100px 0 65px; }
.page-hero .lede { max-width: 780px; }
.prose { max-width: 790px; }
.prose h2 { margin: 70px 0 20px; font-size: 38px; }
.prose h3 { margin: 34px 0 12px; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--ink); }
.prose a { color: var(--accent); }
.definition { margin: 35px 0; padding: 24px 27px; border-left: 3px solid var(--accent); background: rgba(140,255,200,.06); color: #d9f6ea; font-size: 18px; }
.flow { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 34px 0; }
.flow span { padding: 12px 15px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); font: 13px ui-monospace, monospace; }
.flow i { color: var(--accent); font-style: normal; }
.calculator { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.form-card, .result-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
label { display: block; margin: 18px 0 7px; color: var(--muted); font-size: 14px; }
input, select, textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 12px; background: #07110e; color: var(--ink); font: inherit; }
textarea { min-height: 130px; resize: vertical; }
.big-result { margin: 16px 0; padding: 20px 0; border-bottom: 1px solid var(--line); }
.big-result span { display: block; color: var(--muted); font-size: 13px; }
.big-result strong { color: var(--accent); font-size: 36px; }
.demo-output { min-height: 225px; margin-top: 22px; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: #07110e; font: 14px/1.8 ui-monospace, monospace; color: var(--muted); }
.badge { display: inline-flex; padding: 5px 9px; border: 1px solid var(--line); border-radius: 99px; color: var(--accent); font: 11px ui-monospace, monospace; text-transform: uppercase; }
.faq details { border-bottom: 1px solid var(--line); padding: 22px 0; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 19px; }
.faq details p { color: var(--muted); max-width: 760px; }
.footer { margin-top: 60px; padding: 55px 0 30px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 45px; }
.footer p, .footer a { color: var(--muted); font-size: 14px; }
.footer a { display: block; margin: 8px 0; text-decoration: none; }
.footer h3 { font-size: 15px; letter-spacing: 0; }
.copyright { margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.source-note { font-size: 13px; color: var(--muted); }

@media (max-width: 860px) {
  .hero, .video-layout, .calculator { grid-template-columns: 1fr; }
  .hero { padding-top: 65px; gap: 45px; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .section-head p { margin-top: 18px; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; left: 20px; right: 20px; top: 70px; padding: 18px; flex-direction: column; align-items: stretch; border: 1px solid var(--line); border-radius: 16px; background: #0b1713; }
  .nav-links.open { display: flex; }
  .nav-links .button { width: 100%; }
  .metric-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .compare { display: block; overflow-x: auto; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .section { padding: 75px 0; }
  .page-hero { padding-top: 70px; }
  .callout { padding: 28px; }
  .video-frame { padding: 8px; }
}