:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #111827;
  background: #f8fafc;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f6f8fb;
  --text: #111827;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --accent: #0ea5e9;
  --accent-soft: #eff6ff;
  --border: #e5e7eb;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

button,
input {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: #111827;
}

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

.site-nav a {
  color: #374151;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  border: 1px solid #d1d5db;
  border-radius: 999px;
  background: #ffffff;
  padding: 0.75rem 1rem;
  cursor: pointer;
}

.hero-section {
  padding: 5rem 0 4rem;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 32%),
    radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.16), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 1fr);
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: #0ea5e9;
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.75rem, 4vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-text {
  margin: 1.5rem 0;
  max-width: 38rem;
  color: #4b5563;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.95rem 1.75rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: white;
  box-shadow: 0 18px 30px rgba(14, 165, 233, 0.18);
}

.btn-secondary {
  border: 1px solid #d1d5db;
  background: white;
  color: #111827;
}

.hero-stats {
  display: grid;
  gap: 1rem;
}

.stat-card {
  border-radius: 22px;
  background: white;
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid #e5e7eb;
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #111827;
}

.stat-label {
  display: block;
  margin-top: 0.5rem;
  color: #6b7280;
}

.section-light,
.section-dark,
.section-accent {
  padding: 5rem 0;
}

.section-light {
  background: #f8fafc;
}

.section-dark {
  background: #111827;
  color: white;
}

.section-accent {
  background: #eff6ff;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 3vw, 2.75rem);
}

.section-header p {
  margin: 0;
  color: #d1d5db;
}

.section-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.feature-panel,
.membership-panel,
.contact-card {
  border-radius: 28px;
  background: white;
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid #e5e7eb;
}

.section-dark .feature-panel,
.section-dark .membership-panel,
.section-dark .contact-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

.feature-panel h3,
.info-card h3,
.event-item h3 {
  margin-top: 0;
}

.feature-panel ul,
.membership-panel ul {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0;
  display: grid;
  gap: 0.75rem;
}

.feature-panel li,
.membership-panel li {
  padding-left: 1.25rem;
  position: relative;
  color: #4b5563;
}

.feature-panel li::before,
.membership-panel li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #0ea5e9;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.info-card,
.event-item {
  border-radius: 24px;
  padding: 2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0.76));
  border: 1px solid #e5e7eb;
  box-shadow: var(--shadow);
}

.section-dark .info-card,
.section-dark .event-item {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.14);
}

.event-list {
  display: grid;
  gap: 1rem;
}

.event-item strong {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: #0ea5e9;
}

.membership-panel {
  display: grid;
  gap: 1.5rem;
}

.contact-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.contact-card a {
  color: #2563eb;
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: center;
  color: #6b7280;
}

@media (max-width: 900px) {
  .hero-grid,
  .section-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    padding: 1rem 0;
    border-top: 1px solid #e5e7eb;
  }

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

  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    padding: 0 0.75rem;
  }
}