:root {
  color-scheme: light;
  --navy: #102a43;
  --navy-deep: #071c2c;
  --teal: #087f75;
  --teal-light: #dff7f3;
  --ink: #243b53;
  --muted: #52667a;
  --line: #d9e2ec;
  --paper: #ffffff;
  --wash: #f4f8fa;
  --width: 72rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}

a { color: #06675f; text-underline-offset: .18em; }
a:hover { color: var(--navy); }
a:focus-visible { outline: 3px solid #55c7bc; outline-offset: 3px; border-radius: 2px; }

.site-header {
  border-bottom: 1px solid rgba(255,255,255,.15);
  background: var(--navy-deep);
  color: white;
}

.header-inner, main, .footer-inner {
  width: min(calc(100% - 2rem), var(--width));
  margin-inline: auto;
}

.header-inner {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand { color: white; font-weight: 700; text-decoration: none; letter-spacing: .02em; }
.brand small { display: block; color: #a8d8d3; font-size: .72rem; font-weight: 600; line-height: 1.2; }

nav { display: flex; flex-wrap: wrap; gap: .4rem 1.3rem; }
nav a { color: #eaf7f5; font-size: .9rem; text-decoration: none; }
nav a:hover { color: white; text-decoration: underline; }

.hero {
  color: white;
  background: linear-gradient(125deg, var(--navy-deep), var(--navy) 58%, #075e59);
  padding: clamp(4rem, 9vw, 7rem) 0;
}

.hero-inner { width: min(calc(100% - 2rem), var(--width)); margin-inline: auto; }
.eyebrow { margin: 0 0 .65rem; color: #79d9cf; font-size: .82rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 18em; margin: 0; color: inherit; font-size: clamp(2.25rem, 6vw, 4.4rem); line-height: 1.16; letter-spacing: -.035em; }
.lead { max-width: 46rem; margin: 1.5rem 0 0; color: #d7e7ed; font-size: clamp(1rem, 2vw, 1.2rem); }
.status { display: inline-block; margin-top: 1.8rem; padding: .45rem .8rem; border: 1px solid rgba(121,217,207,.5); border-radius: 999px; background: rgba(5,51,56,.45); color: #cff7f2; font-size: .85rem; }

main { padding-block: clamp(2.75rem, 6vw, 5rem); }
.intro { max-width: 50rem; font-size: 1.08rem; }
h2 { margin: 3rem 0 .75rem; color: var(--navy); font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.35; }
h3 { margin: 1.7rem 0 .35rem; color: var(--navy); font-size: 1.08rem; }
p, ul, ol { margin-top: .6rem; }
li + li { margin-top: .35rem; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.card { padding: 1.5rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--paper); box-shadow: 0 10px 30px rgba(16,42,67,.06); }
.card h2, .card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.number { width: 2.2rem; height: 2.2rem; display: grid; place-items: center; margin-bottom: 1rem; border-radius: 50%; background: var(--teal-light); color: var(--teal); font-weight: 800; }

.notice { margin: 2rem 0; padding: 1rem 1.25rem; border-left: 4px solid var(--teal); background: var(--teal-light); }
.notice p { margin: 0; }
.links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 2.5rem; }
.links a { display: block; padding: 1.3rem 1.5rem; border: 1px solid var(--line); border-radius: .65rem; color: var(--navy); font-weight: 700; text-decoration: none; }
.links a span { display: block; margin-top: .25rem; color: var(--muted); font-size: .88rem; font-weight: 400; }
.links a:hover { border-color: var(--teal); background: var(--teal-light); }

.legal { max-width: 52rem; }
.legal h1 { color: var(--navy); font-size: clamp(2rem, 5vw, 3.2rem); }
.updated { color: var(--muted); font-size: .9rem; }
.contact { padding: 1.25rem; border-radius: .6rem; background: var(--wash); }
code { padding: .12em .35em; border-radius: .25rem; background: #edf2f7; font-size: .9em; overflow-wrap: anywhere; }

.site-footer { margin-top: 2rem; border-top: 1px solid var(--line); background: var(--wash); }
.footer-inner { padding-block: 2rem; display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .85rem; }
.footer-inner p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }

@media (max-width: 760px) {
  .header-inner, .footer-inner { align-items: flex-start; flex-direction: column; padding-block: 1rem; }
  .cards, .links { grid-template-columns: 1fr; }
  nav { gap: .3rem 1rem; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }