:root {
  color-scheme: light;
  color: #1c1f26;
  background: #f8fbff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  line-height: 1.6;
}
img {
  max-width: 100%;
  display: block;
}
.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}
.site-header {
  border-bottom: 1px solid rgba(28, 31, 38, 0.08);
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}
.brand {
  color: #0f172a;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.2rem;
}
.site-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.site-nav a {
  color: #475569;
  text-decoration: none;
  transition: color 0.2s ease;
}
.site-nav a:hover {
  color: #0f172a;
}
.hero {
  padding: 4rem 0 3rem;
}
.hero-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: center;
}
.eyebrow {
  margin: 0 0 1rem;
  color: #2563eb;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
}
.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 3vw, 3.5rem);
  line-height: 1.05;
  color: #0f172a;
}
.hero p {
  max-width: 42rem;
  color: #475569;
  font-size: 1.05rem;
}
.hero-box {
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(96, 165, 250, 0.18);
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.06);
}
.hero-box strong {
  display: block;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: #0f172a;
}
.hero-box ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
  color: #475569;
}
.hero-box li {
  margin-bottom: 0.75rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.7rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease;
}
.btn-primary {
  background: #2563eb;
  color: #ffffff;
}
.btn-secondary {
  background: #eef2ff;
  color: #1e293b;
}
.btn:hover {
  transform: translateY(-2px);
}
.stats {
  padding: 2rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.stats-grid div {
  border-radius: 20px;
  background: #ffffff;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}
.stats-grid h2 {
  margin: 0;
  color: #0f172a;
  font-size: 2rem;
}
.stats-grid p {
  margin: 0.5rem 0 0;
  color: #475569;
}
.section {
  padding: 3.5rem 0;
}
.section-header {
  max-width: 42rem;
}
.section-header h2 {
  margin: 0.75rem 0 0;
  font-size: clamp(2rem, 2.4vw, 2.75rem);
  line-height: 1.05;
  color: #0f172a;
}
.section-content {
  margin-top: 1.75rem;
  color: #475569;
  font-size: 1.05rem;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.card {
  background: #ffffff;
  border-radius: 24px;
  padding: 1.75rem;
  box-shadow: 0 15px 45px rgba(15, 23, 42, 0.05);
}
.card h3 {
  margin: 0 0 1rem;
  color: #0f172a;
  font-size: 1.25rem;
}
.card p {
  margin: 0;
  color: #475569;
}
.source-link {
  margin-top: 1rem;
  color: #475569;
  font-size: 0.95rem;
}
.source-link a {
  color: #2563eb;
  text-decoration: none;
}
.source-link a:hover {
  text-decoration: underline;
}
.work-section .work-list {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}
.work-item {
  background: #ffffff;
  border-radius: 24px;
  padding: 1.75rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
}
.work-item h3 {
  margin: 0 0 0.75rem;
  color: #0f172a;
}
.work-item p {
  margin: 0;
  color: #475569;
}
.sponsor-section .cta-card {
  margin-top: 2rem;
  padding: 2rem;
  border-radius: 28px;
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  border: 1px solid rgba(96, 165, 250, 0.18);
}
.sponsor-section .cta-card ul {
  margin-top: 1rem;
  padding-left: 1.25rem;
  color: #475569;
}
.sponsor-section .cta-card li {
  margin-bottom: 0.8rem;
}
.site-footer {
  background: #0f172a;
  color: #f8fafc;
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer p {
  margin: 0;
  color: #cbd5e1;
}
@media (max-width: 900px) {
  .hero-content,
  .stats-grid,
  .card-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-nav {
    width: 100%;
    justify-content: space-between;
  }
  .hero {
    padding-top: 2.5rem;
  }
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (max-width: 900px) {
  .hero-content,
  .stats-grid,
  .card-grid {
    grid-template-columns: 1fr;
  }
}