:root {
  --bg: #ffffff;
  --navy: #0b1f3b;
  --grey: #5c6b7a;
  --light: #f3f5f8;
  --radius: 1rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: #08111a;
  line-height: 1.6;
}

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

.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

.site-header {
  background: #ffffffd9;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e4e8ef;
  position: sticky;
  top: 0;
  z-index: 40;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
}

.logo span {
  color: #2e5fff;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.main-nav a {
  color: #1b2735;
  font-weight: 500;
}

.main-nav a.active {
  color: #2e5fff;
}

.btn-small {
  background: var(--navy);
  color: #fff !important;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
}

.hero {
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 3.2vw, 3rem);
  color: var(--navy);
  margin-bottom: 1rem;
}

.hero p {
  max-width: 36rem;
  color: #415166;
}

.hero-card {
  background: #fff;
  border: 1px solid #e4e8ef;
  border-radius: 1.2rem;
  padding: 1.5rem 1.5rem 1.2rem;
  box-shadow: 0 12px 40px rgba(9,27,58,0.06);
}

.hero-card h2 {
  margin-top: 0;
  color: var(--navy);
}

.hero-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-list li {
  margin-bottom: 0.35rem;
  color: #314152;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.btn-primary {
  background: #2e5fff;
  color: #fff;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  display: inline-block;
}

.btn-link {
  color: #2e5fff;
  font-weight: 500;
}

.section {
  padding: 3.5rem 0;
}

.section-heading {
  margin-bottom: 1.75rem;
}

.section-heading h2 {
  margin: 0 0 0.4rem;
  color: var(--navy);
}

.bg-light {
  background: var(--light);
}

.three-cols {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.two-cols {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.info-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.3rem 1.2rem 1rem;
  border: 1px solid #e4e8ef;
}

.cards-grid {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.sol-card {
  background: #fff;
  border: 1px solid #e4e8ef;
  border-radius: 1rem;
  padding: 1.1rem 1.1rem 1rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sol-card h3 {
  margin-top: 0;
  color: var(--navy);
}

.sol-card p {
  color: #5c6b7a;
  min-height: 3rem;
}

.sol-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.04);
}

.bullet-list {
  list-style: disc;
  padding-left: 1.2rem;
}

.page-hero {
  background: linear-gradient(130deg, #ffffff 0%, #eef2f8 45%, #ffffff 100%);
  padding: 3.3rem 0 2.5rem;
  border-bottom: 1px solid #e4e8ef;
}

.page-hero h1 {
  margin: 0;
  color: var(--navy);
}

.cta {
  background: radial-gradient(circle, #0b1f3b 0%, #0b1f3b 30%, #071020 100%);
  color: #fff;
}

.cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.cta .btn-primary {
  background: #fff;
  color: #0b1f3b;
}

.partners {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.partner-placeholder {
  background: #fff;
  border: 1px dashed #bdc3ce;
  border-radius: 0.7rem;
  padding: 0.6rem 1.1rem;
  font-size: 0.8rem;
  color: #5c6b7a;
}

.contact-form {
  background: #fff;
  border: 1px solid #e4e8ef;
  padding: 1.5rem 1.3rem 1.3rem;
  border-radius: 1rem;
  display: grid;
  gap: 0.5rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #d3d8df;
  border-radius: 0.5rem;
  padding: 0.5rem 0.6rem;
  font: inherit;
}

.site-footer {
  background: #0b1f3b;
  color: #eaeff6;
  padding: 2.5rem 0 1.2rem;
  margin-top: 3rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.footer-title {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.footer-heading {
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.site-footer a {
  color: #eaeff6;
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 1.7rem;
  font-size: 0.8rem;
  color: #d5d9e1;
}

.socials {
  display: flex;
  gap: 0.9rem;
  margin-top: 0.5rem;
}

.research-grid {
  display: grid;
  gap: 1.3rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.research-card {
  background: #fff;
  border: 1px solid #e4e8ef;
  border-radius: 1rem;
  padding: 1.3rem;
}

/* Responsive */
@media (max-width: 820px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-nav {
    position: absolute;
    top: 64px;
    right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    width: 210px;
    border-left: 1px solid #e4e8ef;
    border-bottom: 1px solid #e4e8ef;
    display: none;
  }
  .main-nav a {
    padding: 0.6rem 1rem;
  }
  .nav-toggle {
    display: block;
  }
  .main-nav.show {
    display: flex;
  }
}