/* ============================================================
   MARCO — Behavioral Intelligence
   Design system: charcoal / cream / green · Newsreader + Instrument Sans
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }
ul { list-style: none; }

/* ---------- Tokens ---------- */
:root {
  --charcoal: #161915;
  --charcoal-2: #1e221d;
  --ink: #1d201b;
  --ink-soft: #5a614f;
  --ink-faint: #8b9080;
  --cream: #f4f2e9;
  --paper: #fbfaf5;
  --line: #e0ddcf;
  --line-strong: #cfccba;
  --green: #22714b;
  --green-deep: #1a5a3b;
  --green-soft: #e6efe6;
  --green-bright: #4aa878;
  --cream-on-dark: #efede2;
  --soft-on-dark: #a8ab9c;
  --line-on-dark: rgba(239, 237, 226, 0.14);
  --amber: #a9761f;
  --amber-bg: #f6ecd8;
  --red: #a8452f;
  --red-bg: #f5e4de;
  --serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;
  --container: 1140px;
  --radius: 8px;
}

/* ---------- Base ---------- */
body {
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--ink); }
h1 { font-size: clamp(40px, 5.2vw, 62px); line-height: 1.06; letter-spacing: -0.015em; }
h2 { font-size: clamp(29px, 3.4vw, 40px); line-height: 1.14; letter-spacing: -0.01em; }
h3 { font-family: var(--sans); font-weight: 600; font-size: 17.5px; letter-spacing: -0.01em; }
p { color: var(--ink-soft); }
.lead { font-size: 19px; line-height: 1.6; max-width: 54ch; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 2px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--green); flex-shrink: 0; }
.on-dark .eyebrow { color: var(--green-bright); }
.on-dark .eyebrow::before { background: var(--green-bright); }

.mono-note { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); line-height: 1.7; }

/* ---------- Journey line (signature motif) ---------- */
.journey-line { display: flex; align-items: center; gap: 0; margin: 26px 0 0; }
.journey-line .node {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--green); flex-shrink: 0;
}
.journey-line .node.missing { background: transparent; border: 1.6px dashed var(--ink-faint); }
.journey-line .link { height: 1.5px; width: 44px; background: var(--line-strong); flex-shrink: 0; }
.journey-line .link.to-missing { background: repeating-linear-gradient(90deg, var(--line-strong) 0 5px, transparent 5px 10px); }
.on-dark .journey-line .link { background: var(--line-on-dark); }
.on-dark .journey-line .node.missing { border-color: var(--soft-on-dark); }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 600;
  padding: 13px 22px;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}
.btn-primary { background: var(--charcoal); color: var(--cream-on-dark); }
.btn-primary:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: 10px 16px; font-size: 13.5px; }
.on-dark .btn-primary { background: var(--cream-on-dark); color: var(--charcoal); }
.on-dark .btn-primary:hover { background: #fff; }
.on-dark .btn-ghost { color: var(--cream-on-dark); border-color: var(--line-on-dark); }
.on-dark .btn-ghost:hover { border-color: var(--cream-on-dark); }

.link-arrow {
  font-size: 14.5px; font-weight: 600; color: var(--green-deep);
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.link-arrow:hover { text-decoration: underline; text-underline-offset: 3px; }
.on-dark .link-arrow { color: var(--green-bright); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244, 242, 233, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto; padding: 15px 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-weight: 700; font-size: 17px; letter-spacing: 0.12em;
  text-decoration: none; color: var(--ink); flex-shrink: 0;
}
.logo .mark { display: inline-flex; align-items: center; gap: 4px; }
.logo .mark i { display: block; width: 9px; height: 9px; border-radius: 50%; background: var(--green); }
.logo .mark i.m { background: transparent; border: 1.5px dashed var(--ink-faint); }
.on-dark .logo { color: var(--cream-on-dark); }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-item { position: relative; }
.nav-links > a, .nav-trigger {
  font-size: 14px; font-weight: 500; color: var(--ink); text-decoration: none;
  padding: 9px 13px; border-radius: 6px; display: inline-flex; align-items: center; gap: 6px;
  transition: color .15s ease;
}
.nav-links > a:hover, .nav-trigger:hover, .nav-item:hover .nav-trigger { color: var(--green-deep); }
.nav-links > a[aria-current="page"] { color: var(--green-deep); }
.nav-trigger svg { width: 9px; height: 9px; transition: transform .15s ease; }
.nav-item.open .nav-trigger svg, .nav-item:hover .nav-trigger svg { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px; min-width: 260px;
  box-shadow: 0 18px 40px rgba(22, 25, 21, 0.10);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s ease;
}
.nav-item:hover .dropdown, .nav-item.open .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 11px 13px; border-radius: 7px; font-size: 14px; font-weight: 500; text-decoration: none; }
.dropdown a .sub { display: block; font-size: 12.5px; font-weight: 400; color: var(--ink-faint); margin-top: 2px; }
.dropdown a:hover { background: var(--green-soft); color: var(--green-deep); }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-burger { display: none; flex-direction: column; gap: 4.5px; padding: 10px; }
.nav-burger span { width: 20px; height: 1.8px; background: var(--ink); border-radius: 2px; }
.mobile-menu { display: none; }

/* ---------- Sections ---------- */
.section { padding: 104px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-tight { padding: 64px 0; }
.band-dark { background: var(--charcoal); color: var(--cream-on-dark); }
.band-dark h1, .band-dark h2 { color: var(--cream-on-dark); }
.band-dark h3 { color: var(--cream-on-dark); }
.band-dark p { color: var(--soft-on-dark); }
.band-paper { background: var(--paper); }

.split { display: grid; grid-template-columns: 300px 1fr; gap: 56px; align-items: start; }
.split .side { padding-top: 6px; }
.split .side .eyebrow { margin-bottom: 0; }

/* ---------- Hero ---------- */
.hero { padding: 92px 0 100px; }
.hero-inner { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 64px; align-items: center; }
.hero .lead { margin: 22px 0 32px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint);
  letter-spacing: 0.04em; display: flex; gap: 18px; flex-wrap: wrap; margin-top: 30px;
}

/* ---------- Cards & grids ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px;
}
.card h3 { margin-bottom: 8px; }
.card p { font-size: 15px; line-height: 1.6; }
.band-dark .card { background: var(--charcoal-2); border-color: var(--line-on-dark); }

.step-num {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em;
  color: var(--green-deep); display: block; margin-bottom: 14px;
}
.band-dark .step-num { color: var(--green-bright); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 20px; }
.tag {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.03em;
  padding: 6px 11px; border: 1px solid var(--line-strong); border-radius: 100px; color: var(--ink-soft);
}
.band-dark .tag { border-color: var(--line-on-dark); color: var(--soft-on-dark); }

/* ---------- Integration strip ---------- */
.integ-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.integ-chip {
  font-size: 14px; font-weight: 600; letter-spacing: 0.01em;
  padding: 11px 18px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--paper); color: var(--ink-soft);
}

/* ---------- Pipeline / workflow ---------- */
.pipeline { display: flex; flex-direction: column; max-width: 560px; }
.pipe-node {
  display: grid; grid-template-columns: 26px 1fr; gap: 16px; align-items: baseline;
  padding: 14px 0;
}
.pipe-node .p-label { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); }
.pipe-node .p-title { font-weight: 600; font-size: 16px; }
.pipe-node .p-desc { grid-column: 2; font-size: 14.5px; color: var(--ink-soft); margin-top: 2px; }
.pipe-node + .pipe-node { border-top: 1px solid var(--line); }
.pipe-node.outcome .p-title { color: var(--green-deep); }
.band-dark .pipe-node + .pipe-node { border-color: var(--line-on-dark); }
.band-dark .pipe-node.outcome .p-title { color: var(--green-bright); }

/* ---------- Timeline (BI page) ---------- */
.timeline { border-top: 1px solid var(--line-strong); }
.timeline-row {
  display: grid; grid-template-columns: 90px 1fr 220px; gap: 24px; align-items: baseline;
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.timeline-year { font-family: var(--mono); font-size: 13px; color: var(--ink-faint); }
.timeline-title { font-weight: 600; font-size: 16.5px; }
.timeline-desc { font-size: 14.5px; color: var(--ink-soft); margin-top: 2px; }
.timeline-tags { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); text-align: right; }
.timeline-row.is-now { background: var(--green-soft); margin: 0 -20px; padding: 22px 20px; border-radius: 8px; border-bottom: none; }
.timeline-row.is-now .timeline-year, .timeline-row.is-now .timeline-tags { color: var(--green-deep); }

/* ---------- Product mockups ---------- */
.shot {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(22, 25, 21, 0.10);
  overflow: hidden;
}
.on-dark .shot { border-color: var(--line-on-dark); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45); }
.shot-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 11px 14px; border-bottom: 1px solid var(--line); background: var(--cream);
}
.shot-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.shot-url {
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
  background: var(--paper); border: 1px solid var(--line); border-radius: 5px;
  padding: 4px 12px; margin-left: 10px;
}
.shot-body { padding: 20px; }
.shot-title { font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em; }
.shot-sub { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); margin: 3px 0 14px; }

.conf {
  display: flex; align-items: center; gap: 14px;
  background: var(--green-soft); border: 1px solid #cfe0cf; border-radius: 9px;
  padding: 14px 16px; margin-bottom: 12px;
}
.conf .score { font-family: var(--serif); font-size: 38px; font-weight: 500; color: var(--green-deep); line-height: 1; }
.conf .lbl { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--green-deep); }
.conf .trend { font-size: 12.5px; color: var(--ink-soft); margin-top: 2px; }

.shot-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border: 1px solid var(--line); border-radius: 8px; padding: 11px 13px;
  font-size: 13px; font-weight: 500;
}
.shot-row + .shot-row { margin-top: 8px; }
.shot-row .meta { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); font-weight: 400; margin-left: 8px; }
.pill {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.03em;
  padding: 4px 9px; border-radius: 100px; white-space: nowrap;
}
.pill-ok { background: var(--green-soft); color: var(--green-deep); }
.pill-warn { background: var(--amber-bg); color: var(--amber); }
.pill-risk { background: var(--red-bg); color: var(--red); }

.shot-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.shot-stat { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
.shot-stat .l { font-family: var(--mono); font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); }
.shot-stat .v { font-family: var(--serif); font-size: 21px; color: var(--ink); margin-top: 2px; }

.shot-flex { display: flex; gap: 16px; }
.shot-side { width: 128px; flex-shrink: 0; }
.shot-side .s-item {
  font-size: 12px; font-weight: 500; color: var(--ink-faint);
  padding: 8px 10px; border-radius: 6px; margin-bottom: 2px;
}
.shot-side .s-item.active { background: var(--green-soft); color: var(--green-deep); font-weight: 600; }
.shot-main { flex: 1; min-width: 0; }

.shot-action { border: 1px solid #cfe0cf; background: var(--green-soft); border-radius: 8px; padding: 12px 14px; margin-top: 10px; }
.shot-action .l { font-family: var(--mono); font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--green-deep); }
.shot-action .v { font-size: 13px; font-weight: 500; color: var(--ink); margin-top: 3px; }

/* ---------- Model flow (BI page) ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; align-items: stretch; }
.flow-node { border: 1px solid var(--line-strong); border-radius: 10px; padding: 22px 20px; background: var(--paper); position: relative; }
.flow-node .f-label { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); display: block; margin-bottom: 8px; }
.flow-node .f-title { font-weight: 600; font-size: 15.5px; display: block; margin-bottom: 6px; }
.flow-node .f-desc { font-size: 13.5px; color: var(--ink-soft); line-height: 1.55; }
.flow-node.emph { border-color: var(--green); background: var(--green-soft); }
.flow-node.emph .f-label { color: var(--green-deep); }
.flow-gap { display: flex; align-items: center; justify-content: center; color: var(--ink-faint); font-size: 18px; padding: 0 4px; }
.flow-wrap { display: flex; align-items: stretch; gap: 0; }
.flow-wrap .flow-node { flex: 1; }

/* ---------- FAQ ---------- */
.faq-item { border-top: 1px solid var(--line); padding: 26px 0; }
.faq-item:first-child { border-top: none; }
.faq-q { font-weight: 600; font-size: 17px; margin-bottom: 8px; color: var(--ink); }
.faq-a { font-size: 15px; color: var(--ink-soft); max-width: 66ch; }

/* ---------- Demo form ---------- */
.form { max-width: 520px; }
.form-row { margin-bottom: 18px; }
.form label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.form input, .form select, .form textarea {
  width: 100%; font: inherit; font-size: 15px;
  padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: 7px;
  background: var(--paper); color: var(--ink);
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--green); outline-offset: 1px; border-color: var(--green); }
.form .hint { font-size: 12.5px; color: var(--ink-faint); margin-top: 5px; }
.form-success {
  display: none; border: 1px solid #cfe0cf; background: var(--green-soft);
  border-radius: 9px; padding: 20px 22px;
}
.form-success.show { display: block; }
.form-success strong { display: block; font-size: 16px; margin-bottom: 4px; color: var(--green-deep); }
.form-error { display: none; color: var(--red); font-size: 13.5px; margin-top: 10px; }
.form-error.show { display: block; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--charcoal); color: var(--cream-on-dark); padding: 96px 0; text-align: center; }
.cta-band h2 { color: var(--cream-on-dark); max-width: 24ch; margin: 0 auto 10px; }
.cta-band p { color: var(--soft-on-dark); margin-bottom: 30px; }
.cta-band .hero-ctas { justify-content: center; }
.cta-band .journey-line { justify-content: center; margin: 0 0 34px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--charcoal); color: var(--cream-on-dark); border-top: 1px solid rgba(239, 237, 226, 0.08); }
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  padding: 64px 0 48px;
}
.footer-brand p { font-size: 14px; color: var(--soft-on-dark); margin-top: 14px; max-width: 30ch; }
.footer-col h4 { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--soft-on-dark); margin-bottom: 16px; font-weight: 500; }
.footer-col a { display: block; font-size: 14px; color: var(--cream-on-dark); opacity: 0.85; text-decoration: none; margin-bottom: 11px; }
.footer-col a:hover { opacity: 1; color: var(--green-bright); }
.footer-bottom {
  border-top: 1px solid var(--line-on-dark); padding: 20px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-family: var(--mono); font-size: 11.5px; color: var(--soft-on-dark);
}

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero { padding: 60px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .split { grid-template-columns: 1fr; gap: 24px; }
  .section { padding: 72px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2, .grid-4 { grid-template-columns: 1fr 1fr; }
  .flow, .flow-wrap { grid-template-columns: 1fr; flex-direction: column; }
  .flow-gap { transform: rotate(90deg); padding: 6px 0; }
  .timeline-row { grid-template-columns: 70px 1fr; }
  .timeline-tags { grid-column: 2; text-align: left; margin-top: 4px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-actions .btn-ghost { display: none; }
  .nav-burger { display: flex; }
  .mobile-menu.open {
    display: block; position: fixed; inset: 0; top: 62px;
    background: var(--cream); z-index: 90; overflow-y: auto; padding: 14px 24px 48px;
  }
  .mobile-menu h4 { font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--ink-faint); margin: 22px 0 6px; letter-spacing: 0.06em; font-weight: 500; }
  .mobile-menu a { display: block; padding: 13px 2px; font-size: 16.5px; font-weight: 500; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); }
}
@media (max-width: 620px) {
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .shot-stats { grid-template-columns: 1fr 1fr; }
  .shot-flex { flex-direction: column; }
  .shot-side { width: 100%; display: flex; gap: 4px; flex-wrap: wrap; }
  .footer-top { grid-template-columns: 1fr; }
  .journey-line .link { width: 28px; }
}

/* ============================================================
   v2 — Authority layer: dark hero, thesis, milestones,
   engine architecture, flywheel, pull quotes
   ============================================================ */

/* ---------- Dark hero ---------- */
.hero-dark { background: var(--charcoal); color: var(--cream-on-dark); border-bottom: 1px solid rgba(239,237,226,0.08); }
.hero-dark h1 { color: var(--cream-on-dark); }
.hero-dark .lead { color: var(--soft-on-dark); }
.hero-dark .hero-meta { color: var(--soft-on-dark); opacity: .8; }
.hero-statement { max-width: 880px; padding: 110px 0 96px; }
.hero-statement h1 { font-size: clamp(42px, 5.6vw, 68px); }

/* ---------- Pull quote ---------- */
.quote-block {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(24px, 3vw, 34px); line-height: 1.3; letter-spacing: -0.01em;
  color: var(--ink); max-width: 26ch;
}
.quote-block .q-mark { color: var(--green); }
.on-dark .quote-block, .band-dark .quote-block { color: var(--cream-on-dark); }
.quote-attr { font-family: var(--mono); font-size: 11px; letter-spacing: 0.02em; color: var(--green-deep); margin-top: 18px; white-space: nowrap; }
.chapter p.quote-attr { max-width: none; }
@media (max-width: 620px) { .quote-attr { white-space: normal; } }

/* ---------- Behavioral milestones ledger ---------- */
.milestones { position: relative; max-width: 640px; }
.milestones::before {
  content: ''; position: absolute; left: 6px; top: 14px; bottom: 14px;
  width: 1.6px; background: var(--line-strong);
}
.on-dark .milestones::before { background: var(--line-on-dark); }
.ms { position: relative; display: grid; grid-template-columns: 34px 1fr; padding: 17px 0; }
.ms .node {
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--green); border: 3px solid var(--cream);
  position: relative; z-index: 1; margin-top: 5px;
}
.band-dark .ms .node, .on-dark .ms .node { border-color: var(--charcoal); background: var(--green-bright); }
.ms h3 { font-size: 17px; margin-bottom: 3px; }
.ms p { font-size: 14.5px; line-height: 1.55; }

/* ---------- Thesis chapters ---------- */
.chapter { padding: 84px 0; }
.chapter + .chapter { border-top: 1px solid var(--line); }
.chapter-inner { max-width: 720px; margin: 0 auto; }
.chapter-num {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
  color: var(--green-deep); text-transform: uppercase; display: block; margin-bottom: 18px;
}
.chapter h2 { margin-bottom: 26px; }
.chapter p { margin-bottom: 20px; max-width: 66ch; font-size: 17px; line-height: 1.72; }
.chapter p:last-child { margin-bottom: 0; }
.chapter .quote-block { margin: 44px auto; max-width: 30ch; }

/* ---------- Engine architecture ---------- */
.engine { max-width: 860px; }
.e-layer {
  display: grid; grid-template-columns: 150px 1fr; gap: 24px; align-items: stretch;
}
.e-label {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--ink-faint); padding-top: 22px;
}
.e-body {
  border: 1px solid var(--line-strong); border-radius: 10px;
  background: var(--paper); padding: 20px 24px;
}
.e-body strong { display: block; font-size: 16.5px; font-weight: 600; letter-spacing: -0.01em; color: var(--ink); }
.e-body p { font-size: 14px; line-height: 1.6; margin-top: 5px; }
.e-body .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.e-body .chips span {
  font-family: var(--mono); font-size: 11.5px; padding: 5px 10px;
  border: 1px solid var(--line); border-radius: 100px; color: var(--ink-soft); background: var(--cream);
}
.e-layer.emph .e-body { background: var(--charcoal); border-color: var(--charcoal); }
.e-layer.emph .e-body strong { color: var(--cream-on-dark); }
.e-layer.emph .e-body p { color: var(--soft-on-dark); }
.e-layer.emph .e-label { color: var(--green-deep); }
.e-layer.core .e-body { border-color: var(--green); background: var(--green-soft); }
.e-conn {
  display: grid; grid-template-columns: 150px 1fr; gap: 24px;
}
.e-conn i {
  grid-column: 2; justify-self: center;
  width: 1.6px; height: 26px; background: var(--line-strong); display: block;
}
.e-split { display: grid; grid-template-columns: 150px 1fr 1fr; gap: 24px; }
.e-split .e-body:first-of-type { grid-column: 2; }

/* ---------- Flywheel ---------- */
.flywheel-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.flywheel svg { width: 100%; max-width: 430px; height: auto; margin: 0 auto; }

/* ---------- v2 responsive ---------- */
@media (max-width: 960px) {
  .e-layer, .e-conn { grid-template-columns: 1fr; gap: 8px; }
  .e-label { padding-top: 0; }
  .e-conn i { grid-column: 1; }
  .e-split { grid-template-columns: 1fr; }
  .e-split .e-body:first-of-type { grid-column: 1; }
  .flywheel-wrap { grid-template-columns: 1fr; }
  .chapter { padding: 60px 0; }
}

/* ---------- Fix: CTA band buttons on charcoal ---------- */
.cta-band .btn-primary { background: var(--cream-on-dark); color: var(--charcoal); }
.cta-band .btn-primary:hover { background: #fff; }
.cta-band .btn-ghost { color: var(--cream-on-dark); border-color: var(--line-on-dark); }
.cta-band .btn-ghost:hover { border-color: var(--cream-on-dark); }

/* ---------- Bulleted lists inside engine delivery cards ---------- */
.e-body ul { margin-top: 9px; }
.e-body li { font-size: 14px; color: var(--ink-soft); line-height: 1.7; padding-left: 16px; position: relative; }
.e-body li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--green); position: absolute; left: 0; top: 10px; }

/* ---------- Two-line hero headline ---------- */
.hero-statement { max-width: 1100px; }
.hero-statement .h1-twoline, .h1-twoline { font-size: clamp(32px, 4.1vw, 54px); }
.h1-twoline span { display: block; }

/* ---------- Hero second-line italic ---------- */
.h1-twoline .h1-italic { font-style: italic; color: var(--soft-on-dark); }

/* ---------- FAQ: one-line hero + accordion ---------- */
.faq-h1 { font-size: clamp(34px, 4.2vw, 56px); }


details.faq-item { border-top: 1px solid var(--line); padding: 0; }
details.faq-item:first-child { border-top: none; }
details.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 24px 0;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item .faq-q { margin-bottom: 0; }
details.faq-item summary:hover .faq-q { color: var(--green-deep); }
.faq-chevron {
  flex-shrink: 0; width: 10px; height: 10px;
  border-right: 1.8px solid var(--ink-soft); border-bottom: 1.8px solid var(--ink-soft);
  transform: rotate(45deg); transition: transform .2s ease; margin-top: -4px;
}
details.faq-item[open] .faq-chevron { transform: rotate(225deg); margin-top: 4px; }
details.faq-item .faq-a { padding: 0 34px 26px 0; }
details.faq-item summary:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }

/* ---------- Demo page: During Your Demo bullets ---------- */
.demo-list li { font-size: 15px; color: var(--ink-soft); line-height: 1.6; padding-left: 18px; position: relative; margin-bottom: 9px; }
.demo-list li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--green); position: absolute; left: 0; top: 8px; }

/* ---------- Homepage hero typography pass (spec'd scale) ---------- */
.hero-home .eyebrow {
  font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
}
.hero-home .h1-twoline { line-height: 1.1; font-size: 34px; }
.hero-home .h1-twoline > span:first-child { color: #f5f2ea; }
.hero-home .h1-italic { font-style: italic; font-weight: 400; color: #a9a296; }
.hero-home .lead { font-size: 16px; line-height: 1.68; }
.hero-home h1 + .lead { font-weight: 400; color: #c9c4b6; }
.hero-home .lead + .lead { font-weight: 500; color: #d4cfc1; }
.hero-home .btn { font-size: 15.5px; font-weight: 600; }
@media (max-width: 767px) {
  .hero-home .eyebrow { font-size: 11px; }
}
@media (min-width: 768px) {
  .hero-home .h1-twoline { font-size: 48px; }
  .hero-home .lead { font-size: 18px; }
}
@media (min-width: 1200px) {
  .hero-home .h1-twoline { font-size: 58px; }
  .hero-home .lead { font-size: 19px; }
}

/* ---------- Homepage hero: tighter centered column, less dead space ---------- */
.hero-home { max-width: 940px; }