:root {
  --ink: #111827;
  --muted: #4b5563;
  --soft: #f5f7ff;
  --line: #e5e7eb;
  --brand: #667eea;
  --brand-dark: #4f46e5;
  --green: #10b981;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--soft);
}

body {
  margin: 0;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
  font-weight: 700;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  color: var(--ink);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--green));
  display: grid;
  place-items: center;
  color: #fff;
}

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

.hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 20px 34px;
}

.hero-card,
.page-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 18px 45px rgba(17, 24, 39, 0.08);
}

.hero-card {
  padding: 42px;
}

.eyebrow {
  color: var(--brand-dark);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 900;
  margin: 0 0 12px;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

h2 {
  margin: 30px 0 10px;
  font-size: 24px;
  letter-spacing: -0.02em;
}

h3 {
  margin: 22px 0 8px;
  font-size: 18px;
}

p,
li {
  color: var(--muted);
  line-height: 1.7;
  font-size: 16px;
}

.lead {
  font-size: 19px;
  max-width: 760px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--brand-dark);
  color: #fff;
}

.button.secondary {
  background: #eef2ff;
  color: var(--brand-dark);
}

.grid {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 52px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.mini {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.mini strong {
  display: block;
  margin-bottom: 6px;
}

.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 42px 20px 70px;
}

.page-card {
  padding: 34px;
}

.updated {
  color: #6b7280;
  font-size: 14px;
  margin-top: -4px;
}

.notice {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  border-radius: 14px;
  padding: 16px;
  margin: 20px 0;
}

.contact-card {
  background: #f9fafb;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  margin-top: 18px;
}

.footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 22px 20px;
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  color: #6b7280;
  font-size: 14px;
}

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

  .hero-card,
  .page-card {
    padding: 24px;
    border-radius: 16px;
  }

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