:root {
  color-scheme: light;
  --ink: #173c32;
  --muted: #5e716a;
  --green: #34765e;
  --green-dark: #1f5747;
  --mint: #e8f3ed;
  --paper: #fbfdfb;
  --white: #ffffff;
  --line: #d8e4de;
  --coral: #c96b5c;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
}

a { color: var(--green-dark); }

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
}

.header-inner,
main,
.footer-inner {
  width: min(100% - 32px, 760px);
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.brand {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 800;
  text-decoration: none;
}

nav { display: flex; flex-wrap: wrap; gap: 14px; }
nav a { font-size: 0.78rem; font-weight: 700; text-decoration: none; }

main { padding-block: 56px 72px; }

.eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.25rem);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

h2 {
  margin: 48px 0 12px;
  font-size: 1.25rem;
  line-height: 1.5;
}

h3 { margin: 28px 0 8px; font-size: 1rem; }
p, li { color: var(--muted); }
ul { padding-left: 1.35rem; }

.lead { max-width: 42rem; margin-top: 18px; font-size: 1.02rem; }
.updated { margin-top: 24px; font-size: 0.82rem; }

.notice,
.card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  padding: 22px;
}

.notice { margin-top: 32px; border-left: 5px solid var(--green); }
.notice p { margin: 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.card { color: inherit; text-decoration: none; }
.card strong { display: block; margin-bottom: 8px; }
.card span { color: var(--muted); font-size: 0.86rem; }

.contact-box {
  margin-top: 24px;
  border-radius: 18px;
  background: var(--mint);
  padding: 24px;
}

.contact-box p { margin: 4px 0; }
.contact-box a { font-size: 1.06rem; font-weight: 800; }

.site-footer { border-top: 1px solid var(--line); background: var(--white); }
.footer-inner { padding-block: 30px; }
.footer-inner p { margin: 0; font-size: 0.78rem; }

@media (max-width: 640px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding-block: 16px; }
  main { padding-block: 40px 60px; }
  .cards { grid-template-columns: 1fr; }
}