:root {
  color-scheme: light;
  --ink: #21343a;
  --muted: #5e6f73;
  --paper: #fffdf7;
  --card: #ffffff;
  --line: #dbe4e3;
  --teal: #176f73;
  --teal-dark: #0f5558;
  --coral: #c85f4b;
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(247, 185, 123, 0.18), transparent 24rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}

a { color: var(--teal-dark); text-underline-offset: 0.18em; }
a:hover { color: var(--coral); }
a:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; border-radius: 2px; }

.site-header, main, .site-footer { width: min(100% - 2rem, 760px); margin-inline: auto; }

.site-header { padding-block: 2rem 1rem; }
.brand { color: var(--teal-dark); font-size: 1.25rem; font-weight: 800; text-decoration: none; }
.eyebrow { color: var(--coral); font-size: 0.84rem; font-weight: 700; letter-spacing: 0.08em; }

main { padding-block: 1rem 4rem; }
h1 { font-size: clamp(1.9rem, 7vw, 2.8rem); line-height: 1.3; margin: 0.3rem 0 1rem; }
h2 { font-size: 1.3rem; line-height: 1.45; margin: 2.4rem 0 0.6rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.3rem; }
p, ul, ol { margin-block: 0.7rem; }
li + li { margin-top: 0.35rem; }
.lead { color: var(--muted); font-size: 1.06rem; }
.meta { color: var(--muted); font-size: 0.9rem; }

.card-grid { display: grid; gap: 1rem; margin-top: 2rem; }
.card {
  display: block;
  padding: 1.25rem;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(35, 69, 70, 0.06);
  text-decoration: none;
}
.card strong { display: block; color: var(--teal-dark); font-size: 1.08rem; }
.card span { color: var(--muted); }

.notice { padding: 1rem 1.1rem; background: #eef7f5; border-left: 4px solid var(--teal); border-radius: 8px; }
.contact { display: inline-block; margin-top: 0.5rem; padding: 0.7rem 1rem; color: #fff; background: var(--teal-dark); border-radius: 999px; font-weight: 700; text-decoration: none; }
.contact:hover { color: #fff; background: var(--coral); }

.site-footer { padding-block: 1.5rem 2.5rem; color: var(--muted); border-top: 1px solid var(--line); font-size: 0.9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; }

@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}