:root {
  --blue: #2563eb;
  --blue-dark: #1745af;
  --blue-soft: #eaf1ff;
  --green: #10b981;
  --green-dark: #087d5a;
  --charcoal: #2d3748;
  --slate: #64748b;
  --light: #f7fafc;
  --white: #ffffff;
  --line: #dce4ee;
  --display: "Montserrat", Arial, sans-serif;
  --body: "Source Sans 3", "Source Sans Pro", Arial, sans-serif;
  --mono: "JetBrains Mono", monospace;
  --shadow: 0 18px 44px rgba(45, 55, 72, .10);
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; min-width: 320px; background: var(--white); color: var(--charcoal); font: 400 1rem/1.65 var(--body); -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { max-width: 100%; height: auto; }
a { color: var(--blue-dark); text-underline-offset: 3px; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; border-radius: 4px; }
::selection { background: #cfe0ff; color: var(--charcoal); }

.skip-link { position: fixed; left: 1rem; top: 1rem; z-index: 999; padding: .8rem 1rem; background: var(--charcoal); color: var(--white); transform: translateY(-160%); transition: transform .2s ease; }
.skip-link:focus { transform: translateY(0); }
.page-width { width: min(1180px, calc(100% - 3rem)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.95); border-bottom: 1px solid transparent; transition: border-color .2s ease, box-shadow .2s ease; backdrop-filter: blur(14px); }
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 24px rgba(45,55,72,.06); }
.nav-shell { width: min(1240px, calc(100% - 3rem)); min-height: 84px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; flex: none; align-items: center; min-height: 48px; }
.brand img { display: block; width: 150px; }
.primary-nav { display: flex; align-items: center; gap: clamp(1.15rem, 2.3vw, 2.2rem); }
.primary-nav a { min-height: 48px; display: inline-flex; align-items: center; color: var(--charcoal); font-family: var(--display); font-size: .9rem; font-weight: 600; text-decoration: none; }
.primary-nav a:not(.nav-contact):hover { color: var(--blue); }
.primary-nav .nav-contact { padding: .2rem 1.15rem; background: var(--blue); color: var(--white); border-radius: var(--radius); }
.primary-nav .nav-contact:hover { background: var(--blue-dark); }
.menu-button { display: none; min-width: 48px; min-height: 48px; padding: .5rem; border: 0; background: transparent; color: var(--charcoal); font: 600 .9rem var(--display); }
.menu-icon { display: grid; gap: 6px; }
.menu-icon i { display: block; width: 24px; height: 2px; background: currentColor; transition: transform .2s ease; }

.hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #fff 0%, #f8fbff 100%); }
.hero::before { content: ""; position: absolute; width: 560px; height: 560px; right: -250px; top: -250px; border: 1px solid #dfe9fa; border-radius: 50%; box-shadow: 0 0 0 90px rgba(234,241,255,.55), 0 0 0 180px rgba(234,241,255,.25); }
.hero-grid { min-height: 690px; padding-block: clamp(5rem, 9vw, 8rem); display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(330px, .72fr); align-items: center; gap: clamp(3rem, 8vw, 7rem); position: relative; }
.hero-copy { max-width: 720px; }
.eyebrow { margin: 0 0 1.25rem; display: flex; align-items: center; gap: .7rem; color: var(--blue-dark); font: 600 .78rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.eyebrow span { width: 28px; height: 3px; background: var(--green); border-radius: 2px; }
.hero h1 { margin: 0; max-width: 760px; color: var(--charcoal); font: 700 clamp(2.8rem, 5.7vw, 5.35rem)/1.03 var(--display); letter-spacing: -.052em; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-intro { max-width: 650px; margin: 1.8rem 0 0; color: var(--slate); font-size: clamp(1.12rem, 1.8vw, 1.28rem); line-height: 1.65; }
.hero-actions { margin-top: 2.25rem; display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem 1.8rem; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: .78rem 1.3rem; border: 2px solid transparent; border-radius: var(--radius); font: 600 1rem/1.3 var(--display); text-decoration: none; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: var(--white); box-shadow: 0 10px 22px rgba(37,99,235,.22); }
.button-primary:hover { background: var(--blue-dark); box-shadow: 0 14px 28px rgba(37,99,235,.26); }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: .45rem; color: var(--blue-dark); font-family: var(--display); font-weight: 600; text-decoration-thickness: 1px; }
.hero-proof { position: relative; padding: 1.75rem; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--blue); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-proof::after { content: ""; position: absolute; width: 55px; height: 5px; right: 1.75rem; top: -5px; background: var(--green); }
.proof-topline { display: flex; align-items: center; justify-content: space-between; color: var(--slate); font: 600 .75rem var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.proof-topline i { width: 10px; height: 10px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(16,185,129,.12); }
.proof-statement { margin: 1.4rem 0 1.75rem; color: var(--charcoal); font: 600 1.45rem/1.4 var(--display); }
.proof-grid { margin: 0; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-width: 1px 0 0 1px; }
.proof-grid div { min-height: 116px; padding: 1rem; border: 1px solid var(--line); border-width: 0 1px 1px 0; }
.proof-grid dt { color: var(--blue); font: 700 1.75rem/1.1 var(--display); }
.proof-grid dd { margin: .4rem 0 0; color: var(--slate); font-size: .92rem; line-height: 1.35; }
.hero-band { position: relative; background: var(--blue); color: var(--white); }
.expertise-list { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.expertise-list span { display: flex; align-items: center; gap: 1rem; font-family: var(--display); font-size: .85rem; font-weight: 600; }
.expertise-list span:not(:last-child)::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

.section { padding-block: clamp(5.5rem, 9vw, 8rem); }
.section-heading { margin-bottom: 3rem; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .6fr); gap: 3rem; align-items: end; }
.section-heading h2, .approach h2, .about h2, .contact h2 { margin: 0; max-width: 780px; font: 600 clamp(2rem, 4vw, 3.45rem)/1.15 var(--display); letter-spacing: -.035em; }
.section-heading > p { margin: 0; color: var(--slate); font-size: 1.1rem; }

.services { background: var(--white); }
.services-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.service-card { position: relative; min-height: 410px; padding: clamp(1.6rem, 3vw, 2.4rem); display: flex; flex-direction: column; background: var(--light); border: 1px solid transparent; border-radius: var(--radius); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.service-card:hover { transform: translateY(-3px); border-color: #cbd8e9; box-shadow: var(--shadow); }
.service-number { align-self: flex-start; margin-bottom: 3.4rem; padding: .35rem .55rem; color: var(--blue-dark); background: var(--blue-soft); border-radius: 4px; font: 600 .75rem var(--mono); }
.service-card h3 { margin: 0; font: 600 clamp(1.3rem, 2.2vw, 1.7rem)/1.3 var(--display); }
.service-card > p { margin: 1rem 0; color: var(--slate); font-size: 1.04rem; }
.service-card ul { margin: auto 0 0; padding: 1.1rem 0 0; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: .5rem 1.1rem; list-style: none; color: var(--charcoal); font-size: .9rem; font-weight: 600; }
.service-card li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: .5rem; border-radius: 50%; background: var(--green); }
.decision-questions { margin-top: 1.25rem; padding: clamp(1.6rem, 3vw, 2.4rem); display: grid; grid-template-columns: .65fr 1fr; gap: clamp(2rem, 7vw, 6rem); background: var(--blue-soft); border: 1px solid #d4e2ff; border-radius: var(--radius); }
.decision-questions .eyebrow { margin-bottom: .8rem; }
.decision-questions h3 { margin: 0; font: 600 clamp(1.45rem, 2.5vw, 2rem)/1.25 var(--display); }
.decision-questions ul { margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem 1.8rem; list-style: none; }
.decision-questions li { position: relative; padding-left: 1.2rem; color: var(--charcoal); font-size: 1.02rem; }
.decision-questions li::before { content: ""; position: absolute; left: 0; top: .63em; width: 7px; height: 7px; border-radius: 50%; background: var(--green-dark); }

.approach { position: relative; overflow: hidden; background: var(--charcoal); color: var(--white); }
.approach::before { content: ""; position: absolute; width: 460px; height: 460px; left: -300px; bottom: -280px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: 0 0 0 80px rgba(255,255,255,.025), 0 0 0 160px rgba(255,255,255,.02); }
.approach-grid { position: relative; display: grid; grid-template-columns: .82fr 1fr; gap: clamp(4rem, 9vw, 8rem); }
.eyebrow-light { color: #d8e5ff; }
.approach-intro > p:last-child { margin: 1.5rem 0 0; max-width: 520px; color: #c5cfdb; font-size: 1.08rem; }
.approach-steps { margin: 0; padding: 0; list-style: none; }
.approach-steps li { padding: 0 0 2.1rem; display: grid; grid-template-columns: 50px 1fr; gap: 1.2rem; border-bottom: 1px solid rgba(255,255,255,.17); }
.approach-steps li + li { padding-top: 2.1rem; }
.approach-steps li > span { color: #79efc6; font: 600 .75rem var(--mono); }
.approach-steps h3 { margin: 0; font: 600 1.2rem var(--display); }
.approach-steps p { margin: .65rem 0 0; color: #c5cfdb; }

.research { background: var(--light); }
.research-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.research-card { min-height: 270px; grid-column: span 2; padding: 1.6rem; display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); }
.research-card:nth-child(4), .research-card:nth-child(5) { grid-column: span 3; }
.research-featured { position: relative; background: var(--blue); color: var(--white); border-color: var(--blue); }
.research-featured::after { content: ""; position: absolute; top: 0; right: 1.5rem; width: 54px; height: 5px; background: var(--green); }
.research-type { margin: 0 0 auto; color: var(--green-dark); font: 600 .72rem var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.research-featured .research-type { color: #9ef3d4; }
.research-card h3 { margin: 3rem 0 .75rem; font: 600 1.25rem/1.35 var(--display); }
.research-card > p:last-child { margin: 0; color: var(--slate); }
.research-featured > p:last-child { color: #dfebff; }
.research-note { margin: 2rem 0 0; color: var(--slate); text-align: center; font-size: 1.04rem; }
.research-note a { font-weight: 600; }

.about { background: var(--white); }
.about-grid { display: grid; grid-template-columns: .78fr 1fr; gap: clamp(4rem, 10vw, 9rem); }
.about-heading { position: sticky; top: 130px; align-self: start; }
.about-copy { color: var(--slate); font-size: 1.12rem; }
.about-copy p { margin: 0 0 1.6rem; }
.about-copy strong { color: var(--charcoal); }
.team-strip { margin-top: 4.5rem; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.team-strip div { min-height: 140px; padding: 1.5rem; display: flex; flex-direction: column; justify-content: space-between; }
.team-strip div + div { border-left: 1px solid var(--line); }
.team-strip strong { color: var(--blue); font: 600 1.3rem var(--display); }
.team-strip span { color: var(--slate); }

.contact { padding-block: clamp(5.5rem, 10vw, 8rem); background: var(--blue); color: var(--white); }
.contact-inner { max-width: 850px; text-align: center; }
.contact .eyebrow { justify-content: center; }
.contact h2 { max-width: 850px; font-size: clamp(2.4rem, 5vw, 4.4rem); }
.contact p:not(.eyebrow) { max-width: 650px; margin: 1.4rem auto 2rem; color: var(--white); font-size: 1.15rem; }
.button-light { background: var(--white); color: var(--blue-dark); }
.button-light:hover { background: var(--light); }

.site-footer { padding-block: 3.5rem; background: var(--light); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 2.5rem; align-items: start; }
.footer-brand img { width: 140px; display: block; }
.footer-brand p { margin: .8rem 0 0; color: var(--slate); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1rem 1.8rem; }
.footer-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--charcoal); font-family: var(--display); font-size: .9rem; font-weight: 600; text-decoration: none; }
.footer-links a:hover { color: var(--blue); }
.footer-meta { grid-column: 1 / -1; margin: 0; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--slate); font-size: .9rem; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 3.2rem; }
  .hero-proof { max-width: 620px; }
  .expertise-list { flex-wrap: wrap; justify-content: flex-start; padding-block: 1.25rem; }
  .expertise-list span::after { display: none; }
  .section-heading, .approach-grid, .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .decision-questions { grid-template-columns: 1fr; }
  .about-heading { position: static; }
  .research-card { grid-column: span 3; }
  .research-card:nth-child(5) { grid-column: 2 / span 4; }
}

@media (max-width: 820px) {
  .menu-button { display: flex; align-items: center; gap: .65rem; }
  .primary-nav { position: fixed; inset: 84px 0 auto; max-height: calc(100vh - 84px); overflow-y: auto; padding: 1rem 1.5rem 2rem; display: none; flex-direction: column; align-items: stretch; gap: .25rem; background: var(--white); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding-inline: .5rem; }
  .primary-nav .nav-contact { margin-top: .7rem; justify-content: center; }
  .menu-button[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-4px) rotate(-45deg); }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .service-number { margin-bottom: 2.25rem; }
  .team-strip { grid-template-columns: 1fr; }
  .team-strip div + div { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .page-width, .nav-shell { width: min(100% - 2rem, 1180px); }
  .nav-shell { min-height: 76px; }
  .brand img { width: 126px; }
  .primary-nav { inset-block-start: 76px; max-height: calc(100vh - 76px); }
  .menu-button-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .hero-grid { min-height: auto; padding-block: 4.5rem; }
  .hero h1 { font-size: clamp(2.55rem, 12vw, 3.6rem); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { justify-content: center; }
  .hero-proof { padding: 1.25rem; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-grid div { min-height: 98px; }
  .expertise-list { gap: .75rem; }
  .expertise-list span { padding: .45rem .7rem; background: rgba(255,255,255,.1); border-radius: 999px; }
  .section-heading { margin-bottom: 2rem; }
  .decision-questions ul { grid-template-columns: 1fr; }
  .section { padding-block: 4.75rem; }
  .research-grid { grid-template-columns: 1fr; }
  .research-card, .research-card:nth-child(4), .research-card:nth-child(5) { grid-column: auto; min-height: 240px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (forced-colors: active) {
  .eyebrow span, .service-card li::before, .proof-topline i { forced-color-adjust: none; background: Highlight; }
  .button, .nav-contact { border-color: ButtonText !important; }
}