/* a3i global — boutique consultancy: navy/charcoal + cool gray-white + muted steel */

:root {
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --surface-soft: #F0F2F5;
  --text: #1B2430;
  --muted: #5C6675;
  --sky: #1F4E79;
  --sky-deep: #1A4268;
  --accent: #1F4E79;
  --accent-deep: #163A5C;
  --border: #E2E6EC;
  --chip: #EEF2F6;
  --radius: 12px;
  --radius-lg: 18px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --max: 1080px;
  --header-h: 4rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.5rem);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--accent); }

a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute; left: 1rem; top: -100%; z-index: 1000;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem;
  border-radius: 8px; font-weight: 700; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(244, 245, 247, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.logo {
  font-weight: 700; font-size: 0.95rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--text); text-decoration: none;
}
.logo span { color: var(--accent-deep); }
.nav { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: flex-end; }
.nav a {
  color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 500;
}
.nav a:hover { color: var(--text); }

.section-inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.hero {
  padding: 4.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(900px 480px at 18% -12%, rgba(74, 93, 115, 0.07), transparent 55%),
    radial-gradient(700px 400px at 100% 0%, rgba(232, 236, 241, 0.85), transparent 50%),
    linear-gradient(180deg, #EEF0F3 0%, var(--bg) 100%);
}
.eyebrow {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent-deep); margin-bottom: 0.85rem;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 750; letter-spacing: -0.02em; line-height: 1.1;
  margin-bottom: 0.75rem; color: var(--text);
}
.hero-tagline {
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  color: var(--text); max-width: 36ch; margin-bottom: 0.75rem; line-height: 1.4;
  font-weight: 550;
}
.hero-sub {
  color: var(--muted); max-width: 52ch; margin-bottom: 1rem; font-size: 1.05rem;
}
.hero-chip { margin-bottom: 1.5rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.85rem 1.4rem; border-radius: 999px; font-weight: 650;
  font-size: 0.95rem; text-decoration: none; border: 1px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn-primary {
  background: var(--accent); color: #fff;
}
.btn-primary:hover { background: var(--accent-deep); color: #fff; }

.trust {
  padding: 1.35rem 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.trust-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1rem 1.5rem;
}
.trust-list {
  list-style: none; display: flex; flex-wrap: wrap; gap: 0.65rem 1.25rem;
  color: var(--muted); font-size: 0.9rem; font-weight: 600;
}
.trust-list li {
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.trust-list li::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}
.operator-chip-inline {
  color: var(--accent-deep) !important;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.82rem !important;
}
.vosb-badge {
  display: block; height: 56px; width: auto; max-width: 100%;
}

section { padding: 4rem 0; }
.section-head { margin-bottom: 2rem; max-width: 44rem; }
.section-label {
  display: block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent-deep); margin-bottom: 0.5rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 700;
  letter-spacing: -0.02em; margin-bottom: 0.4rem; color: var(--text);
}
.section-head p { color: var(--muted); }

.services { background: var(--bg); }
.service-grid {
  display: grid; gap: 1.25rem; grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}
.service-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem 1.35rem;
  box-shadow: 0 1px 0 rgba(27, 36, 48, 0.05);
}
.service-card h3 {
  font-size: 1.15rem; font-weight: 700; margin-bottom: 0.55rem;
  letter-spacing: -0.01em; color: var(--text);
}
.service-card p { color: var(--muted); font-size: 0.98rem; }

.who { background: var(--surface-soft); }
.chip-row {
  list-style: none; display: flex; flex-wrap: wrap; gap: 0.65rem;
  margin-bottom: 1rem;
}
.chip-row li {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 0.45rem 0.9rem;
  font-size: 0.9rem; font-weight: 600; color: var(--text);
}
.who-note { color: var(--muted); font-size: 0.95rem; max-width: 62ch; }

.work {
  background: var(--surface); border-block: 1px solid var(--border);
}
.work-list { list-style: none; display: grid; gap: 0.85rem; }
.work-list a {
  display: block; color: var(--text); text-decoration: none;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.15rem;
  font-weight: 600; font-size: 0.98rem;
}
.work-list a:hover { border-color: var(--accent); color: var(--accent-deep); }
.work-list li { display: grid; gap: 0.45rem; }
.work-so { color: var(--muted); font-size: 0.92rem; padding: 0 0.15rem 0.35rem; max-width: 62ch; }

.insights-head { margin-top: 2.75rem; }
.insights-list {
  list-style: none; display: grid; gap: 0.75rem;
}
.insights-list li {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.95rem 1.1rem;
  color: var(--text); font-weight: 550; font-size: 0.95rem;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem 0.75rem;
}
.insight-src {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent-deep);
  background: var(--accent-soft); border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

.why {
  background: var(--bg);
}
.why-points {
  display: grid; gap: 1rem; grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .why-points { grid-template-columns: repeat(3, 1fr); }
}
.why-point {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1.15rem;
}
.why-point strong {
  display: block; color: var(--text); margin-bottom: 0.35rem; font-weight: 700;
}
.why-point p { color: var(--muted); font-size: 0.95rem; }

.mid-cta { padding: 2rem 0; background: var(--bg); }
.mid-cta-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.25rem 1.5rem;
  box-shadow: 0 8px 24px rgba(27, 36, 48, 0.05);
}
.mid-cta-inner p { color: var(--text); font-weight: 600; margin: 0; }

.about { background: var(--surface-soft); }
.about-grid {
  display: grid; gap: 1.75rem; align-items: start;
}
@media (min-width: 720px) {
  .about-grid { grid-template-columns: 200px 1fr; gap: 2rem; }
}
.about-photo { margin: 0; }
.about-photo img {
  width: 100%; max-width: 220px; height: auto; border-radius: var(--radius-lg);
  border: 1px solid var(--border); display: block;
  box-shadow: 0 10px 28px rgba(26, 43, 60, 0.08);
}
.operator-chip {
  margin-top: 0.65rem; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--accent-deep);
}

.about p {
  color: var(--muted); max-width: 62ch; margin-bottom: 1rem;
}
.about p:last-child { margin-bottom: 0; }
.about strong { color: var(--text); }
.ooda-quiet {
  font-size: 0.9rem; color: var(--muted); font-style: italic;
  border-top: 1px solid var(--border); padding-top: 0.85rem; margin-top: 0.35rem;
}

.contact {
  background: var(--surface); border-top: 1px solid var(--border);
}
.contact-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem 1.5rem;
  display: grid; gap: 1.5rem;
}
@media (min-width: 640px) {
  .contact-card { grid-template-columns: 1fr 1fr; padding: 2.25rem 2rem; align-items: center; }
}
.contact-item h3 {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem;
}
.contact-item a:not(.btn) {
  font-size: 1.1rem; font-weight: 600; text-decoration: none; color: var(--text);
}
.contact-item a:not(.btn):hover { color: var(--accent-deep); }
.contact-cta .btn { margin-top: 0.15rem; }

.site-footer {
  padding: 2rem 0 2.5rem; border-top: 1px solid var(--border);
  background: var(--bg);
}
.site-footer .inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem;
  align-items: center; justify-content: space-between;
  color: var(--muted); font-size: 0.875rem;
}
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--accent-deep); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


.cta-phone {
  margin-top: 0.75rem;
  font-size: 0.95rem;
}
.cta-phone a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}
.cta-phone a:hover { color: var(--sky-deep); }
.cta-row .cta-phone { margin-top: 0.85rem; }


.insight-so {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.insights-list a { font-weight: 600; text-decoration: none; color: var(--text); }
.insights-list a:hover { color: var(--sky-deep); }
.insights-more {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.insights-more summary { cursor: pointer; font-weight: 600; color: var(--text); }
.insights-archive { margin-top: 0.75rem; }


/* Design: Selected work heavier than Insights */
.work-list {
  list-style: none;
  display: grid;
  gap: 1rem;
}
.work-list > li {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: 0 1px 0 rgba(27, 36, 48, 0.04);
}
.work-list > li a {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.work-list > li a:hover { color: var(--sky-deep); }
.work-so { margin-top: 0.4rem; color: var(--muted); font-size: 0.95rem; }

.insights-list {
  list-style: none;
  display: grid;
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.insights-list > li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}
.insight-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--sky-deep);
  margin-bottom: 0.25rem;
}
.vosb-badge {
  height: 30px;
  width: auto;
}


.how-engage {
  margin-top: 1rem;
  max-width: 42rem;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.5;
}


.teaming-note { color: var(--muted); font-size: 0.88rem; max-width: 56ch; margin-top: 0.35rem; }
.contact-card-single { display: grid; gap: 0.75rem; justify-items: start; }
.contact-note { color: var(--muted); font-size: 0.9rem; margin: 0; }

.cta-row { display: flex; flex-direction: column; align-items: flex-start; gap: 0.5rem; }
.cta-micro, .teaming-note, .services-prime-note {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 1rem 0 0;
  max-width: 36rem;
}
.btn.btn-primary {
  max-width: 100%;
  text-wrap: balance;
  line-height: 1.35;
}
@media (max-width: 520px) {
  .btn.btn-primary { font-size: 0.92rem; padding: 0.75rem 1rem; }
}


.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}
.logo-mark {
  height: 26px;
  width: auto;
  display: block;
}
.logo-text {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}
.logo-text span { color: var(--accent-deep); }
@media (max-width: 640px) {
  .logo-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
}
.vosb-badge {
  height: 32px !important;
  width: auto !important;
  object-fit: contain;
}


/* vosb quiet */
.trust-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
}
.vosb-badge {
  height: 28px !important;
  width: auto !important;
  opacity: 0.92;
  flex-shrink: 0;
}


.aam-context {
  margin-top: 0.85rem;
  max-width: 44rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}



.logo-mark { display: none; }
.sweet-spot {
  margin: 0.75rem 0 0;
  max-width: 42rem;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.5;
}

.logo-full {
  height: 44px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}
@media (max-width: 640px) {
  .logo-full { height: 36px; max-width: 180px; }
}

.evtol-sites {
  margin: 0.75rem 0 0;
  max-width: 44rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}