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

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #fff;
  color: #000;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  z-index: 100;
}
.brand {
  color: #000;
  text-decoration: none;
  display: flex;
  align-items: center;
}
.brand-logo {
  height: 32px;
  width: 32px;
  display: block;
}
.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  color: #000;
  text-decoration: none;
  opacity: 0.45;
  transition: opacity 0.15s;
}
.nav-links a:hover,
.nav-links a.active { opacity: 1; }

/* ── Main content ── */
main {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: 64px 40px 80px;
}

/* ── Hero ── */
.hero { margin-bottom: 60px; }
.hero h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.6px;
  line-height: 1.2;
}
.tagline {
  font-size: 30px;
  font-weight: 400;
  color: #999;
  letter-spacing: -0.6px;
}

/* ── Cluster section ── */
.clusters {
  display: flex;
  gap: 64px;
  align-items: center;
  margin-bottom: 68px;
  flex-wrap: wrap;
}
.cluster-svg {
  flex: 1;
  min-width: 160px;
  height: auto;
  display: block;
}

/* ── Header image ── */
.header-image {
  margin-bottom: 68px;
}
.header-image img {
  max-width: 100%;
  display: block;
}

/* ── Intelligence heading ── */
.intelligence { margin-bottom: 52px; }
.intelligence h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.6px;
  line-height: 1.2;
}
.intelligence .sub {
  font-size: 30px;
  font-weight: 400;
  color: #999;
  letter-spacing: -0.6px;
}

/* ── Body copy ── */
.mission-link {
  display: inline-block;
  font-size: 14px;
  color: #888;
  text-decoration: none;
  margin-bottom: 28px;
}
.mission-link:hover { color: #000; }

.body-copy h3 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1px;
  margin-bottom: 14px;
  margin-top: 32px;
}
.body-copy h3:first-of-type { margin-top: 0; }
.body-copy p {
  font-size: 15px;
  color: #111;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 580px;
}
.body-copy p:last-child { margin-bottom: 0; }
.body-copy p.closing { margin-top: 20px; }

/* ── Contact page ── */
.contact-header { margin-bottom: 48px; }
.contact-header h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 12px;
}
.contact-header p {
  font-size: 15px;
  color: #555;
  max-width: 420px;
  line-height: 1.65;
}

.contact-form {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: #666;
}
input, textarea {
  font-family: inherit;
  font-size: 15px;
  color: #000;
  background: #fff;
  border: 1px solid #d8d8d8;
  border-radius: 3px;
  padding: 11px 14px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
  -webkit-appearance: none;
  appearance: none;
}
input:focus, textarea:focus { border-color: #000; }
textarea { resize: vertical; min-height: 140px; }

.submit-btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: #000;
  border: none;
  border-radius: 3px;
  padding: 13px 28px;
  cursor: pointer;
  align-self: flex-start;
  letter-spacing: 0.2px;
  transition: opacity 0.15s;
}
.submit-btn:hover { opacity: 0.72; }

/* ── Footer ── */
footer { border-top: 1px solid #e8e8e8; }
.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 22px 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-divider { color: #ddd; font-size: 13px; }
.footer-btn {
  font-size: 13px;
  color: #888;
  text-decoration: none;
  background: #f2f2f2;
  border-radius: 8px;
  padding: 6px 14px;
  transition: background 0.15s, color 0.15s;
}
.footer-btn:hover {
  background: #e8e8e8;
  color: #000;
}

/* ── Updates page ── */
.updates-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.update-entry {
  max-width: 580px;
}
.update-date {
  font-size: 14px;
  font-weight: 700;
  color: #999;
  margin-bottom: 10px;
}
.update-entry p:not(.update-date) {
  font-size: 15px;
  color: #111;
  line-height: 1.7;
  margin-bottom: 14px;
}
.update-entry p:last-child { margin-bottom: 0; }

/* ── Responsive ── */
@media (max-width: 600px) {
  nav { padding: 16px 20px; }
  main { padding: 48px 20px 64px; }
  .hero h1, .tagline,
  .intelligence h2, .intelligence .sub { font-size: 24px; }
  .clusters { gap: 32px; }
  .footer-inner { padding: 20px; }
}