:root {
  color-scheme: light;
  --bg: #f4f1e8;
  --surface: #fffdf8;
  --ink: #12202b;
  --muted: #4d5a63;
  --accent: #0f6a73;
  --accent-dark: #0b4d54;
  --line: #ded8cc;
  --shadow: 0 16px 40px rgba(18, 32, 43, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(15, 106, 115, 0.14), transparent 28%),
    linear-gradient(180deg, #f6f1e6 0%, #efe8da 100%);
}

.page {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.hero,
.notice,
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero {
  padding: 40px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 1;
  max-width: 10ch;
}

.lede,
.hint,
.notice p,
li {
  color: var(--muted);
}

.lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 1.05rem;
  line-height: 1.6;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 140ms ease, background-color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.primary:hover {
  background: var(--accent-dark);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.hint {
  margin-top: 14px;
  font-size: 0.95rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.card,
.notice {
  padding: 28px;
}

.card ul {
  margin: 16px 0 0;
  padding-left: 20px;
  line-height: 1.8;
}

.notice {
  margin-top: 22px;
}

.notice p {
  margin: 14px 0 0;
  line-height: 1.7;
}

@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 28px;
  }
}