:root {
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  color: #0f172a;
  background: radial-gradient(
    circle at top right,
    #e9f6f1,
    #f5f7fa 45%,
    #ffffff 100%
  );
}

.main-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 2.5rem 1rem 3rem;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.top-nav a {
  text-decoration: none;
  color: #0f172a;
  background: #ffffff;
  border: 1px solid #d6dee8;
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
  transition:
    background-color 0.16s ease,
    color 0.16s ease,
    border-color 0.16s ease,
    box-shadow 0.16s ease;
}

.top-nav a:hover {
  border-color: #b7c5d3;
  background: #f7fafc;
}

.top-nav a[aria-current="page"] {
  background: #1b4d3e;
  border-color: #1b4d3e;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(27, 77, 62, 0.24);
}

.hero {
  background: #ffffff;
  border: 1px solid #dce3eb;
  border-radius: 18px;
  padding: 1.4rem 1.25rem;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
}

h1 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  line-height: 1.2;
}

h2 {
  margin: 1.2rem 0 0.5rem;
  font-size: 1.2rem;
}

p {
  margin: 0.35rem 0;
  line-height: 1.55;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.btn {
  text-decoration: none;
  padding: 0.6rem 0.95rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
}

.btn-primary {
  color: #ffffff;
  background: #1b4d3e;
}

.btn-secondary {
  color: #0f172a;
  background: #f8fafc;
  border: 1px solid #cfd8e3;
}

.grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.card {
  background: #ffffff;
  border: 1px solid #dce3eb;
  border-radius: 14px;
  padding: 0.9rem;
}

footer {
  margin-top: 1.3rem;
  color: #475569;
  font-size: 0.9rem;
}