/* ==========================================================================
   Boston Automations Research — The Next Big Thing
   Shared design system
   Palette: BA Red #E63946 | Black #1A1A2E | White #FFFFFF
   Type: Montserrat (display) / Barlow (body)
   ========================================================================== */

:root {
  --ba-red: #E63946;
  --ba-red-dark: #c32b38;
  --ba-black: #1A1A2E;
  --ba-black-soft: #232342;
  --white: #ffffff;
  --gray-50: #f7f7f9;
  --gray-100: #f5f5f5;
  --gray-200: #ebebef;
  --gray-300: #d9d9e0;
  --gray-500: #A1A1A1;
  --gray-700: #4a4a57;
  --ink: #333333;
  --shadow-sm: 0 1px 3px rgba(26,26,46,.08), 0 1px 2px rgba(26,26,46,.06);
  --shadow-md: 0 10px 30px rgba(26,26,46,.10);
  --shadow-lg: 0 24px 60px rgba(26,26,46,.16);
  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1180px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Barlow', Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  font-size: 17px;
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,.display {
  font-family: 'Montserrat', 'Arial Black', Helvetica, sans-serif;
  color: var(--ba-black);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

a { color: var(--ba-red); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--ba-red-dark); }

img { max-width: 100%; display: block; }

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

.eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .72rem;
  color: var(--ba-red);
  display: inline-block;
  margin-bottom: 18px;
}
.eyebrow.light { color: rgba(255,255,255,.85); }

.section { padding: 92px 0; }
.section.tight { padding: 64px 0; }
.section.alt { background: var(--gray-50); }
.section.dark { background: var(--ba-black); color: rgba(255,255,255,.82); }
.section.dark h1,.section.dark h2,.section.dark h3,.section.dark h4 { color: #fff; }

.section-head { max-width: 760px; margin-bottom: 54px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 700; }
.section-head p { margin-top: 18px; font-size: 1.12rem; color: var(--gray-700); }
.section.dark .section-head p { color: rgba(255,255,255,.72); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: 'Montserrat', sans-serif; font-weight: 600; font-size: .95rem;
  padding: 14px 28px; border-radius: 999px; cursor: pointer;
  border: 2px solid transparent; transition: all .22s var(--ease);
  letter-spacing: .01em;
}
.btn-primary { background: var(--ba-red); color: #fff; }
.btn-primary:hover { background: var(--ba-red-dark); color:#fff; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(230,57,70,.34); }
.btn-ghost { background: transparent; color: var(--ba-black); border-color: var(--ba-black); }
.btn-ghost:hover { background: var(--ba-black); color:#fff; }
.btn-ghost.light { color:#fff; border-color: rgba(255,255,255,.5); }
.btn-ghost.light:hover { background:#fff; color: var(--ba-black); }
.btn .arr { transition: transform .22s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--gray-200);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 9px; flex: 0 0 auto;
  background: var(--ba-black); display: grid; place-items: center;
  position: relative;
}
.brand .mark svg { width: 21px; height: 21px; }
.brand .name { font-family:'Montserrat',sans-serif; font-weight:700; font-size:1.06rem; letter-spacing:-.01em; line-height:1; }
.brand .name .red { color: var(--ba-red); }
.brand .sub { display:block; font-family:'Barlow',sans-serif; font-weight:500; font-size:.62rem; letter-spacing:.22em; text-transform:uppercase; color:var(--gray-500); margin-top:4px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-family:'Montserrat',sans-serif; font-weight:600; font-size:.9rem;
  color: var(--ba-black);
}
.nav-links a:hover { color: var(--ba-red); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display:none; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle span { display:block; width:24px; height:2px; background:var(--ba-black); margin:5px 0; transition:.2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 78% -10%, rgba(230,57,70,.28), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(230,57,70,.14), transparent 55%),
    linear-gradient(160deg, #14142a 0%, #1A1A2E 55%, #20203c 100%);
}
.hero .wrap { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 104px; }
.hero-grid { display:grid; grid-template-columns: 1.15fr .85fr; gap:56px; align-items:center; }
.hero h1 { color:#fff; font-size: clamp(2.5rem, 5.2vw, 4.1rem); font-weight:700; }
.hero h1 .red { color: var(--ba-red); }
.hero .lede { margin-top:24px; font-size:1.22rem; color: rgba(255,255,255,.78); max-width:560px; }
.hero .hero-cta { margin-top:36px; display:flex; gap:14px; flex-wrap:wrap; }
.hero .hero-meta { margin-top:40px; display:flex; gap:34px; flex-wrap:wrap; }
.hero .hero-meta .stat .n { font-family:'Montserrat',sans-serif; font-weight:700; font-size:1.9rem; color:#fff; }
.hero .hero-meta .stat .l { font-size:.82rem; color:rgba(255,255,255,.6); text-transform:uppercase; letter-spacing:.1em; }

/* Hero visual — the geo-acoustic illustration */
.geo-illustration { position: relative; aspect-ratio: 1/1; }
.geo-illustration svg { width:100%; height:100%; filter: drop-shadow(0 30px 50px rgba(0,0,0,.4)); }

.hero-badge {
  display:inline-flex; align-items:center; gap:9px; padding:8px 16px;
  border:1px solid rgba(255,255,255,.22); border-radius:999px;
  font-size:.78rem; font-weight:600; font-family:'Montserrat',sans-serif;
  letter-spacing:.08em; text-transform:uppercase; color:rgba(255,255,255,.85);
  background: rgba(255,255,255,.05); margin-bottom:26px;
}
.hero-badge .dot { width:7px;height:7px;border-radius:50%;background:var(--ba-red); box-shadow:0 0 0 4px rgba(230,57,70,.25); }

/* ---------- Logo strip ---------- */
.trust { padding: 30px 0; border-bottom:1px solid var(--gray-200); background:#fff; }
.trust .wrap { display:flex; align-items:center; gap:30px; flex-wrap:wrap; justify-content:center; }
.trust .label { font-size:.74rem; letter-spacing:.16em; text-transform:uppercase; color:var(--gray-500); font-weight:600; font-family:'Montserrat',sans-serif; }
.trust .names { display:flex; gap:34px; flex-wrap:wrap; }
.trust .names span { font-family:'Montserrat',sans-serif; font-weight:700; color:var(--ba-black); opacity:.55; letter-spacing:.02em; }

/* ---------- Cards / grids ---------- */
.grid { display:grid; gap:26px; }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.grid-4 { grid-template-columns: repeat(4,1fr); }

.card {
  background:#fff; border:1px solid var(--gray-200); border-radius: var(--radius);
  padding:30px; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card .ico {
  width:46px;height:46px;border-radius:11px; display:grid;place-items:center;
  background: rgba(230,57,70,.1); color:var(--ba-red); margin-bottom:18px;
}
.card .ico svg { width:24px;height:24px; }
.card h3 { font-size:1.22rem; font-weight:700; margin-bottom:10px; }
.card p { color:var(--gray-700); font-size:.99rem; }

/* Stat cards */
.statbar { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.statcard { text-align:center; padding:30px 18px; border-radius:var(--radius); background:#fff; border:1px solid var(--gray-200); box-shadow:var(--shadow-sm); }
.statcard .n { font-family:'Montserrat',sans-serif; font-weight:700; font-size:2.5rem; color:var(--ba-red); line-height:1; }
.statcard .l { margin-top:10px; font-size:.92rem; color:var(--gray-700); }
.statcard .src { margin-top:8px; font-size:.72rem; color:var(--gray-500); text-transform:uppercase; letter-spacing:.08em; }

/* ---------- Timeline (adoption waves) ---------- */
.timeline { position:relative; margin-top:20px; }
.tl-track { position:absolute; left:0; right:0; top:34px; height:3px; background:linear-gradient(90deg, var(--gray-300), var(--ba-red)); border-radius:3px; }
.tl-items { display:grid; grid-template-columns:repeat(5,1fr); gap:18px; position:relative; }
.tl-item { text-align:center; }
.tl-dot { width:18px;height:18px;border-radius:50%; background:#fff; border:4px solid var(--gray-300); margin:26px auto 18px; position:relative; z-index:2; transition:.2s; }
.tl-item.active .tl-dot { border-color:var(--ba-red); box-shadow:0 0 0 6px rgba(230,57,70,.18); transform:scale(1.15); }
.tl-year { font-family:'Montserrat',sans-serif; font-weight:700; font-size:1.15rem; color:var(--ba-black); }
.tl-item.active .tl-year { color:var(--ba-red); }
.tl-label { font-size:.92rem; color:var(--gray-700); margin-top:6px; }
.tl-tag { display:inline-block; margin-top:10px; font-size:.68rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; padding:4px 10px; border-radius:999px; background:var(--gray-100); color:var(--gray-500); font-family:'Montserrat',sans-serif; }
.tl-item.active .tl-tag { background:var(--ba-red); color:#fff; }

/* ---------- Feature split ---------- */
.split { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.split.reverse .split-media { order:2; }
.split-media { border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-lg); background:var(--ba-black); }
.feature-list { list-style:none; margin-top:24px; }
.feature-list li { display:flex; gap:14px; padding:14px 0; border-bottom:1px solid var(--gray-200); }
.feature-list li:last-child { border-bottom:none; }
.feature-list .fi-ico { flex:0 0 auto; width:30px;height:30px;border-radius:8px;background:rgba(230,57,70,.1); color:var(--ba-red); display:grid;place-items:center; }
.feature-list .fi-ico svg{width:17px;height:17px;}
.feature-list h4 { font-size:1.05rem; font-weight:600; margin-bottom:2px; }
.feature-list p { font-size:.93rem; color:var(--gray-700); }

/* ---------- Chart wrappers ---------- */
.chart-card { background:#fff; border:1px solid var(--gray-200); border-radius:var(--radius); padding:28px; box-shadow:var(--shadow-sm); }
.chart-card h3 { font-size:1.18rem; margin-bottom:4px; }
.chart-card .csub { font-size:.86rem; color:var(--gray-500); margin-bottom:20px; }
.chart-card .csrc { margin-top:16px; font-size:.74rem; color:var(--gray-500); border-top:1px solid var(--gray-200); padding-top:12px; }
.chart-holder { position:relative; height:320px; }

/* ---------- Quote / callout ---------- */
.pullquote { border-left:4px solid var(--ba-red); padding:8px 0 8px 28px; margin:34px 0; }
.pullquote p { font-family:'Montserrat',sans-serif; font-weight:600; font-size:1.4rem; color:var(--ba-black); line-height:1.32; }
.pullquote cite { display:block; margin-top:14px; font-style:normal; font-size:.92rem; color:var(--gray-500); font-family:'Barlow',sans-serif; }

.callout-band { background:var(--ba-red); color:#fff; }
.callout-band h2 { color:#fff; }
.callout-band .wrap { display:flex; align-items:center; justify-content:space-between; gap:30px; flex-wrap:wrap; }

/* ---------- Article / blog ---------- */
.post-card { display:flex; flex-direction:column; background:#fff; border:1px solid var(--gray-200); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); transition:transform .25s var(--ease), box-shadow .25s var(--ease); }
.post-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
.post-card .thumb { aspect-ratio:16/9; background:var(--ba-black); position:relative; overflow:hidden; }
.post-card .thumb svg { position:absolute; inset:0; width:100%; height:100%; }
.post-card .body { padding:24px; flex:1; display:flex; flex-direction:column; }
.post-card .cat { font-size:.7rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--ba-red); font-family:'Montserrat',sans-serif; }
.post-card h3 { font-size:1.2rem; margin:10px 0; font-weight:700; line-height:1.22; }
.post-card p { font-size:.95rem; color:var(--gray-700); flex:1; }
.post-card .meta { margin-top:16px; font-size:.8rem; color:var(--gray-500); display:flex; gap:10px; align-items:center; }

.article { max-width:760px; margin:0 auto; }
.article .kicker { color:var(--ba-red); font-family:'Montserrat',sans-serif; font-weight:700; text-transform:uppercase; letter-spacing:.14em; font-size:.74rem; }
.article h1 { font-size:clamp(2rem,4.4vw,3rem); margin:16px 0 18px; }
.article .byline { color:var(--gray-500); font-size:.92rem; border-bottom:1px solid var(--gray-200); padding-bottom:24px; margin-bottom:34px; }
.article h2 { font-size:1.7rem; margin:42px 0 16px; }
.article h3 { font-size:1.28rem; margin:30px 0 12px; }
.article p { margin-bottom:20px; font-size:1.08rem; color:var(--ink); }
.article ul,.article ol { margin:0 0 22px 22px; }
.article li { margin-bottom:9px; }
.article figure { margin:30px 0; }
.article figcaption { font-size:.84rem; color:var(--gray-500); margin-top:10px; text-align:center; }
.data-table { width:100%; border-collapse:collapse; margin:26px 0; font-size:.95rem; }
.data-table th,.data-table td { text-align:left; padding:12px 14px; border-bottom:1px solid var(--gray-200); }
.data-table th { font-family:'Montserrat',sans-serif; background:var(--gray-50); font-size:.82rem; text-transform:uppercase; letter-spacing:.06em; }
.data-table tr:hover td { background:var(--gray-50); }

/* ---------- Breadcrumb ---------- */
.crumb { font-size:.84rem; color:var(--gray-500); padding:22px 0; }
.crumb a { color:var(--gray-700); }

/* ---------- Page hero (interior) ---------- */
.page-hero { background:var(--ba-black); color:#fff; padding:70px 0 64px;
  background: radial-gradient(900px 400px at 80% -20%, rgba(230,57,70,.25), transparent 60%), linear-gradient(160deg,#16162c,#1A1A2E); }
.page-hero h1 { color:#fff; font-size:clamp(2.1rem,4.4vw,3.3rem); max-width:840px; }
.page-hero p { color:rgba(255,255,255,.75); font-size:1.15rem; max-width:680px; margin-top:18px; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom:1px solid var(--gray-200); }
.faq-q { width:100%; text-align:left; background:none; border:none; cursor:pointer; padding:22px 0; font-family:'Montserrat',sans-serif; font-weight:600; font-size:1.12rem; color:var(--ba-black); display:flex; justify-content:space-between; gap:20px; align-items:center; }
.faq-q .pm { color:var(--ba-red); font-size:1.5rem; transition:transform .2s; flex:0 0 auto; }
.faq-q[aria-expanded="true"] .pm { transform:rotate(45deg); }
.faq-a { max-height:0; overflow:hidden; transition:max-height .3s var(--ease); }
.faq-a p { padding:0 0 22px; color:var(--gray-700); }

/* ---------- Footer ---------- */
.site-footer { background:var(--ba-black); color:rgba(255,255,255,.65); padding:64px 0 30px; }
.footer-grid { display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px; }
.site-footer h4 { color:#fff; font-size:.82rem; text-transform:uppercase; letter-spacing:.14em; margin-bottom:18px; font-family:'Montserrat',sans-serif; }
.site-footer a { color:rgba(255,255,255,.65); font-size:.95rem; }
.site-footer a:hover { color:#fff; }
.site-footer ul { list-style:none; }
.site-footer li { margin-bottom:11px; }
.footer-brand .name { font-family:'Montserrat',sans-serif; font-weight:700; font-size:1.2rem; color:#fff; }
.footer-brand .name .red { color:var(--ba-red); }
.footer-brand p { margin-top:14px; max-width:300px; font-size:.95rem; }
.footer-bottom { margin-top:48px; padding-top:24px; border-top:1px solid rgba(255,255,255,.12); display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; font-size:.84rem; color:rgba(255,255,255,.5); }
.footer-bottom .legal { max-width:760px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity:1; transform:none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns:1fr; }
  .geo-illustration { max-width:420px; margin:10px auto 0; }
  .split { grid-template-columns:1fr; gap:36px; }
  .split.reverse .split-media { order:0; }
  .grid-3,.grid-4 { grid-template-columns:repeat(2,1fr); }
  .statbar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .tl-items { grid-template-columns:1fr; gap:8px; }
  .tl-track { display:none; }
  .tl-dot { margin:14px auto 10px; }
  .nav-links { position:fixed; inset:72px 0 auto 0; background:#fff; flex-direction:column; padding:24px 28px; gap:18px; border-bottom:1px solid var(--gray-200); transform:translateY(-130%); transition:transform .3s var(--ease); box-shadow:var(--shadow-md); }
  .nav-links.open { transform:none; }
  .nav-toggle { display:block; }
}
@media (max-width: 560px) {
  .grid-2,.grid-3,.grid-4 { grid-template-columns:1fr; }
  .statbar { grid-template-columns:1fr 1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .section { padding:64px 0; }
  body { font-size:16px; }
}