:root {
  color-scheme: light;
  --sky: #dff4fb;
  --sky-strong: #8fd3ee;
  --yellow: #ffd46a;
  --green: #72c98a;
  --cream: #fffaf0;
  --paper: #ffffff;
  --navy: #172b45;
  --muted: #5d6b7d;
  --line: #d8e5ed;
  --shadow: 0 18px 45px rgba(23, 43, 69, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, var(--sky), #f7fbfd 42%, #ffffff);
  color: var(--navy);
  line-height: 1.6;
}

a {
  color: #126184;
  font-weight: 700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.site-footer {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-size: 1.1rem;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 72% 30%, var(--yellow) 0 11%, transparent 12%),
    linear-gradient(135deg, var(--sky-strong), var(--green));
  box-shadow: 0 8px 22px rgba(23, 43, 69, 0.14);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

main {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  align-items: center;
  gap: 46px;
  min-height: 58vh;
  padding: 42px 0 64px;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 1;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: #1b6f4a;
  font-size: 0.88rem;
  font-weight: 800;
  text-transform: uppercase;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.6vw, 1.35rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 10px;
  background: var(--navy);
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(23, 43, 69, 0.18);
}

.button.secondary {
  background: #ffffff;
  color: var(--navy);
  border: 1px solid var(--line);
  box-shadow: none;
}

.project-card,
.content-card,
.icon-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.project-card {
  padding: 28px;
}

.project-card h2,
.content-card h2 {
  margin: 0 0 10px;
  font-size: 1.5rem;
}

.icon-card {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 28px;
}

.book-icon {
  width: min(280px, 100%);
  aspect-ratio: 1;
  border-radius: 28%;
  background: linear-gradient(180deg, #86d0ec, #c8edf2);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 -22px 60px rgba(23, 43, 69, 0.08);
}

.book-icon::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 20%;
  height: 44%;
  border-radius: 22px;
  background:
    linear-gradient(90deg, #fff9e8 0 47%, #e8dcb9 47% 53%, #fff9e8 53%),
    #fff9e8;
  box-shadow: 0 16px 32px rgba(23, 43, 69, 0.18);
}

.book-icon::after {
  content: "";
  position: absolute;
  right: 25%;
  bottom: 32%;
  width: 31%;
  height: 28%;
  border: 4px solid var(--navy);
  border-radius: 14px;
  background:
    radial-gradient(circle at 74% 25%, var(--yellow) 0 11%, transparent 12%),
    linear-gradient(180deg, #afe5f4 0 48%, var(--green) 49% 100%);
}

.section {
  padding: 34px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.content-card {
  padding: 24px;
}

.content-card p,
.content-card li {
  color: var(--muted);
}

.content-card ul {
  padding-left: 20px;
}

.policy {
  max-width: 820px;
  padding-bottom: 72px;
}

.policy h1 {
  margin-top: 32px;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.05;
}

.policy h2 {
  margin-top: 36px;
  font-size: 1.35rem;
}

.note {
  border-left: 4px solid var(--yellow);
  padding: 14px 16px;
  border-radius: 10px;
  background: #fff7df;
  color: #5f4a13;
}

.site-footer {
  padding: 44px 0 52px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-top: 16px;
  }

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