:root {
  --bg: #f6f8fc;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-solid: #ffffff;
  --text: #14213d;
  --muted: #546179;
  --primary: #2f6fed;
  --primary-dark: #1f4fb8;
  --accent: #8fd3ff;
  --border: rgba(20, 33, 61, 0.12);
  --shadow: 0 20px 60px rgba(22, 34, 57, 0.08);
  --radius: 20px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(143, 211, 255, 0.5), transparent 28%),
    linear-gradient(180deg, #f9fbff 0%, var(--bg) 100%);
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(246, 248, 252, 0.78);
  border-bottom: 1px solid rgba(20, 33, 61, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #55a8ff);
  color: white;
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.hero {
  padding: 5.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow,
.section-label {
  margin: 0 0 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--primary);
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin-top: 0;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

h3 {
  margin-bottom: 0.65rem;
}

.lead,
.section-intro {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.hero-stats div,
.activity-card {
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
}

.hero-stats strong,
.gallery-card strong {
  display: block;
}

.hero-stats span,
.gallery-card span {
  color: var(--muted);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 0.95rem 1.35rem;
  background: linear-gradient(135deg, var(--primary), #4b90ff);
  color: white;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 12px 30px rgba(47, 111, 237, 0.24);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(47, 111, 237, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.btn-small {
  padding: 0.72rem 1rem;
}

.hero-card,
.card,
.benefit,
.cta-card,
.gallery-card,
.logo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 1.5rem;
}

.hero-card ul {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
}

.section {
  padding: 4.5rem 0;
}

.section-muted {
  background: rgba(255, 255, 255, 0.45);
}

.section-soft {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.4), rgba(143, 211, 255, 0.12));
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
}

.cards,
.benefit-grid,
.gallery-grid,
.activity-grid,
.logo-grid,
.cta-grid {
  display: grid;
  gap: 1.2rem;
  margin-top: 2rem;
}

.cards,
.benefit-grid,
.gallery-grid,
.cta-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards-4,
.activity-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.logo-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.card,
.benefit,
.cta-card {
  padding: 1.4rem;
  background: var(--surface-solid);
}

.activity-card {
  box-shadow: var(--shadow);
}

.activity-tag {
  display: inline-flex;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(47, 111, 237, 0.1);
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gallery-card {
  overflow: hidden;
  background: var(--surface-solid);
}

.gallery-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.gallery-card figcaption {
  padding: 1rem 1.1rem 1.2rem;
}

.logo-card {
  min-height: 104px;
  display: grid;
  place-items: center;
  padding: 1rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.72);
}

.logo-card span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.chapter-box {
  display: grid;
  gap: 1.4rem;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.chapter-item {
  padding: 1.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.partner-cta {
  margin-top: 1.4rem;
  padding: 1.25rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(47, 111, 237, 0.08), rgba(143, 211, 255, 0.18));
  box-shadow: var(--shadow);
}

.partner-cta strong {
  display: block;
  margin-bottom: 0.35rem;
}

.partner-cta p {
  margin: 0;
  color: var(--muted);
}

.cta-section {
  padding-top: 1rem;
  padding-bottom: 5rem;
}

.cta-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cta-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

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

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-row a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 1120px) {
  .logo-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1040px) {
  .cards-4,
  .activity-grid,
  .chapter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .hero-grid,
  .two-col,
  .cards,
  .cards-4,
  .benefit-grid,
  .gallery-grid,
  .activity-grid,
  .logo-grid,
  .chapter-grid,
  .cta-grid,
  .footer-row {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 0;
  }

  nav {
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .partner-cta {
    display: grid;
    justify-items: start;
  }
}