:root {
  --bg: #f5f5f7;
  --white: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0,0,0,.08);
  --blue: #0071e3;
  --dark: #0b0b0c;
  --radius-xl: 36px;
  --radius-lg: 26px;
  --shadow: 0 20px 70px rgba(0,0,0,.08);
  --max: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245,245,247,.78);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,.05);
}

.nav-shell {
  max-width: var(--max);
  margin: 0 auto;
  min-height: 64px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: -.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #111;
  color: white;
  font-size: 12px;
  letter-spacing: .04em;
}

.brand-name {
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  color: #3a3a3c;
}

.nav-links a {
  transition: opacity .2s ease;
}

.nav-links a:hover {
  opacity: .55;
}

.nav-cta {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--text);
  color: white !important;
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  width: 40px;
  height: 40px;
  position: relative;
}

.menu-toggle span {
  position: absolute;
  left: 9px;
  right: 9px;
  height: 1.5px;
  background: #111;
  transition: .25s ease;
}

.menu-toggle span:first-child { top: 15px; }
.menu-toggle span:last-child { top: 23px; }

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 120px 28px;
}

.hero {
  min-height: 820px;
  display: grid;
  grid-template-columns: 1.14fr .86fr;
  align-items: center;
  gap: 74px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(58px, 7.5vw, 100px);
  line-height: .94;
  letter-spacing: -.065em;
  font-weight: 700;
  max-width: 870px;
}

.hero-title span {
  color: #8e8e93;
}

.hero-copy {
  margin-top: 34px;
  max-width: 680px;
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.45;
  letter-spacing: -.022em;
  color: #515154;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform .2s ease, opacity .2s ease, background .2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--blue);
  color: white;
}

.button-secondary {
  background: #e8e8ed;
  color: #1d1d1f;
}

.hero-card {
  height: 590px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 20%, rgba(255,255,255,.95), transparent 34%),
    linear-gradient(145deg, #dce9f6 0%, #d5d8f5 48%, #f1e8f4 100%);
  box-shadow: var(--shadow);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(6px);
}

.orb-one {
  width: 360px;
  height: 360px;
  top: 90px;
  right: -70px;
  background: rgba(255,255,255,.5);
}

.orb-two {
  width: 260px;
  height: 260px;
  bottom: -60px;
  left: -50px;
  background: rgba(116, 144, 255, .18);
}

.hero-card-content {
  position: absolute;
  left: 40px;
  right: 40px;
  bottom: 40px;
  background: rgba(255,255,255,.68);
  backdrop-filter: blur(22px);
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 24px;
  padding: 26px;
}

.micro-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
}

.hero-card-line {
  height: 1px;
  background: rgba(0,0,0,.12);
  margin: 18px 0;
}

.hero-card-content p {
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: -.02em;
}

.intro-strip {
  background: #111;
  color: white;
}

.strip-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 42px 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.stat {
  display: block;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.02em;
  margin-bottom: 5px;
}

.stat-label {
  color: #a1a1a6;
  font-size: 13px;
}

.section-white {
  max-width: none;
  background: white;
  padding-left: max(28px, calc((100vw - var(--max)) / 2 + 28px));
  padding-right: max(28px, calc((100vw - var(--max)) / 2 + 28px));
}

.section-soft {
  max-width: none;
  padding-left: max(28px, calc((100vw - var(--max)) / 2 + 28px));
  padding-right: max(28px, calc((100vw - var(--max)) / 2 + 28px));
}

.section-dark {
  max-width: none;
  background: var(--dark);
  color: white;
  padding-left: max(28px, calc((100vw - var(--max)) / 2 + 28px));
  padding-right: max(28px, calc((100vw - var(--max)) / 2 + 28px));
}

.section-heading {
  max-width: 850px;
  margin-bottom: 70px;
}

.section-heading h2,
.contact-panel h2 {
  font-size: clamp(42px, 5.5vw, 72px);
  line-height: 1.02;
  letter-spacing: -.055em;
}

.section-subtitle {
  margin-top: 24px;
  color: var(--muted);
  font-size: 20px;
  max-width: 660px;
}

.light .eyebrow {
  color: #9a9aa0;
}

.two-column {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 90px;
  align-items: start;
}

.large-copy {
  font-size: clamp(28px, 3.2vw, 42px);
  letter-spacing: -.038em;
  line-height: 1.16;
}

.body-copy {
  font-size: 18px;
  color: #5d5d62;
}

.body-copy p + p {
  margin-top: 20px;
}

.text-link {
  display: inline-flex;
  gap: 8px;
  margin-top: 30px;
  color: var(--blue);
  font-weight: 500;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.glass-card {
  min-height: 270px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(0,0,0,.05);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 10px 35px rgba(0,0,0,.04);
  transition: transform .3s ease, box-shadow .3s ease;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 50px rgba(0,0,0,.08);
}

.card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #111;
  color: white;
  font-size: 12px;
  margin-bottom: 70px;
}

.glass-card h3,
.research-feature h3 {
  font-size: 24px;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}

.glass-card p {
  color: #6e6e73;
  font-size: 15px;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: #2a2a2d;
  border-radius: 30px;
  overflow: hidden;
}

.research-feature {
  background: #151516;
  padding: 36px;
  min-height: 360px;
}

.feature-number {
  font-size: 12px;
  color: #7d7d82;
  margin-bottom: 130px;
}

.research-feature p:last-child {
  color: #a1a1a6;
  font-size: 15px;
}

.credential-line {
  color: #1d1d1f;
  font-weight: 600;
}

.statement {
  padding-top: 96px;
  padding-bottom: 96px;
}

.statement-inner {
  max-width: 980px;
}

.statement blockquote {
  font-size: clamp(34px, 4vw, 58px);
  letter-spacing: -.05em;
  line-height: 1.08;
  font-weight: 600;
}

.contact-section {
  padding-top: 90px;
  padding-bottom: 90px;
}

.contact-panel {
  background: white;
  border-radius: var(--radius-xl);
  padding: 74px;
  box-shadow: var(--shadow);
}

.contact-panel > p:not(.eyebrow):not(.contact-note) {
  margin: 28px 0 34px;
  max-width: 690px;
  font-size: 20px;
  color: var(--muted);
}

.contact-note {
  margin-top: 18px;
  max-width: 680px;
  color: #8a8a8f;
  font-size: 12px;
}

footer {
  background: #111;
  color: white;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 28px;
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.footer-inner p,
.footer-meta {
  color: #909096;
  font-size: 13px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  text-align: right;
  gap: 4px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.delay-1 { transition-delay: .08s; }
.delay-2 { transition-delay: .16s; }
.delay-3 { transition-delay: .24s; }

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 92px;
  }

  .hero-card {
    height: 440px;
  }

  .strip-grid,
  .cards-grid,
  .research-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .research-grid {
    background: transparent;
    gap: 14px;
  }

  .research-feature {
    border-radius: 22px;
  }

  .two-column {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 720px) {
  .section {
    padding: 82px 20px;
  }

  .nav-shell {
    padding: 0 20px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 70px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(255,255,255,.96);
    box-shadow: 0 18px 60px rgba(0,0,0,.12);
    border: 1px solid rgba(0,0,0,.06);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px;
  }

  .nav-cta {
    text-align: center;
    margin-top: 4px;
  }

  .brand-name {
    display: none;
  }

  .hero {
    padding-top: 72px;
    gap: 52px;
  }

  .hero-title {
    font-size: 54px;
  }

  .hero-copy {
    font-size: 19px;
  }

  .hero-card {
    height: 380px;
  }

  .hero-card-content {
    left: 20px;
    right: 20px;
    bottom: 20px;
    padding: 20px;
  }

  .strip-grid,
  .cards-grid,
  .research-grid {
    grid-template-columns: 1fr;
  }

  .strip-grid {
    padding: 34px 20px;
  }

  .section-white,
  .section-soft,
  .section-dark {
    padding-left: 20px;
    padding-right: 20px;
  }

  .section-heading {
    margin-bottom: 46px;
  }

  .glass-card {
    min-height: 230px;
  }

  .card-icon {
    margin-bottom: 48px;
  }

  .research-feature {
    min-height: 300px;
  }

  .feature-number {
    margin-bottom: 90px;
  }

  .contact-panel {
    padding: 40px 24px;
  }

  .footer-inner {
    flex-direction: column;
    padding: 38px 20px;
  }

  .footer-meta {
    text-align: left;
  }
}

@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;
  }
}