:root {
  --bg: #f5efe5;
  --surface: #fffaf2;
  --ink: #1e2a2f;
  --muted: #5a6a73;
  --brand: #006d77;
  --brand-2: #ff9f1c;
  --ring: #83c5be;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 20%, #ffdca6 0, rgba(255, 220, 166, 0) 45%),
    radial-gradient(circle at 85% 15%, #b9e6e1 0, rgba(185, 230, 225, 0) 40%),
    var(--bg);
  line-height: 1.6;
}

.container {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(6px);
  background: rgba(255, 250, 242, 0.92);
  border-bottom: 1px solid #eadcc7;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
}

.logo span {
  color: var(--brand);
}

nav ul {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
}

nav a:hover,
nav a:focus-visible,
nav a.active {
  background: #d4efec;
  outline: none;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.1;
}

.hero p {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.cta-row {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 0.7rem;
  padding: 0.7rem 1rem;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(130deg, var(--brand), #0f8f99);
  color: #fff;
}

.btn-secondary {
  border: 2px solid var(--brand);
  color: var(--brand);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid #ebddc8;
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
}

.card h3 {
  margin-top: 0;
}

.page {
  padding: 2.5rem 0 3.5rem;
}

.page h1 {
  margin-top: 0;
}

.block {
  background: var(--surface);
  border: 1px solid #ebddc8;
  border-radius: 1rem;
  padding: 1rem 1.1rem;
  margin: 0.85rem 0;
}

.site-footer {
  border-top: 1px solid #eadcc7;
  padding: 1.2rem 0;
  background: rgba(255, 250, 242, 0.9);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.notice {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--muted);
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    gap: 0.6rem;
    align-items: flex-start;
  }

  nav ul {
    flex-wrap: wrap;
  }
}