:root {
  color-scheme: light;
  --background: #f7f8fa;
  --surface: #ffffff;
  --surface-muted: #eef4f2;
  --border: #d9e0e8;
  --text: #111827;
  --muted: #566274;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --accent: #2563eb;
  --warning: #92400e;
}

* {
  box-sizing: border-box;
}

body {
  background: var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  margin: 0;
}

a {
  color: var(--primary);
  font-weight: 750;
  text-decoration: none;
}

a:hover {
  color: var(--primary-dark);
}

.nav {
  align-items: center;
  background: rgba(247, 248, 250, 0.94);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  color: var(--text);
  display: flex;
  font-size: 18px;
  font-weight: 850;
  gap: 10px;
}

.brand img {
  border-radius: 8px;
  height: 36px;
  width: 36px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.hero {
  align-items: center;
  background:
    linear-gradient(90deg, rgba(17, 24, 39, 0.82), rgba(17, 24, 39, 0.42)),
    url("assets/splash.png") center right / contain no-repeat,
    #0f766e;
  color: #ffffff;
  display: flex;
  min-height: 74vh;
  padding: 72px 32px;
}

.hero-inner {
  max-width: 720px;
  width: 100%;
}

.eyebrow {
  color: #99f6e4;
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(40px, 7vw, 78px);
  letter-spacing: 0;
  line-height: 0.98;
  margin: 0;
  max-width: 780px;
}

.hero p {
  color: #e5f7f4;
  font-size: 20px;
  margin: 24px 0 0;
  max-width: 620px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 8px;
  display: inline-flex;
  font-weight: 850;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
}

.button.primary {
  background: #ffffff;
  color: var(--primary-dark);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.56);
  color: #ffffff;
}

.section {
  padding: 64px 32px;
}

.section-inner {
  margin: 0 auto;
  max-width: 1080px;
}

.section h2,
.page h1 {
  font-size: clamp(30px, 4vw, 48px);
  letter-spacing: 0;
  line-height: 1.08;
  margin: 0 0 16px;
}

.section p,
.page p,
.page li {
  color: var(--muted);
  font-size: 17px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 28px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.card h3 {
  font-size: 19px;
  margin: 0 0 8px;
}

.card p {
  font-size: 15px;
  margin: 0;
}

.band {
  background: var(--surface-muted);
  border-block: 1px solid var(--border);
}

.page {
  margin: 0 auto;
  max-width: 860px;
  padding: 56px 32px 80px;
}

.page h2 {
  border-top: 1px solid var(--border);
  font-size: 24px;
  margin: 36px 0 10px;
  padding-top: 28px;
}

.notice {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  color: var(--warning);
  font-weight: 700;
  padding: 16px;
}

.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding: 28px 32px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 16px 20px;
  }

  .hero {
    background:
      linear-gradient(180deg, rgba(17, 24, 39, 0.86), rgba(17, 24, 39, 0.56)),
      url("assets/splash.png") center bottom / 90% auto no-repeat,
      #0f766e;
    min-height: 82vh;
    padding: 44px 20px 220px;
  }

  .section,
  .page {
    padding-left: 20px;
    padding-right: 20px;
  }

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