:root {
  color-scheme: light;
  --ink: #203a34;
  --muted: #526a61;
  --bg: #f7f8f4;
  --paper: #ffffff;
  --brand: #096858;
  --border: #dce7df;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--ink); font: 16px/1.75 system-ui, -apple-system, "Noto Sans JP", sans-serif; }
a { color: var(--brand); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: .13em; }
a:focus-visible, summary:focus-visible { outline: 3px solid #a35f0b; outline-offset: 4px; }
.skip-link { position: absolute; top: -6rem; left: 1rem; z-index: 20; padding: .6rem 1rem; background: var(--paper); }
.skip-link:focus { top: .6rem; }
.site-header { background: linear-gradient(110deg, #e9f3ec, #fff9ec); border-bottom: 1px solid var(--border); }
.site-header__inner, main, .site-footer__inner { max-width: 1040px; margin: 0 auto; padding: 1.5rem clamp(1rem, 4vw, 2.5rem); }
.brand { display: inline-block; color: var(--ink); font-size: clamp(1.4rem, 4vw, 1.9rem); font-weight: 800; letter-spacing: .02em; text-decoration: none; }
.brand:hover { text-decoration: underline; }
.tagline { margin: .2rem 0 1rem; color: var(--muted); font-size: .96rem; }
nav { display: flex; flex-wrap: wrap; gap: .5rem; }
nav a { display: inline-flex; padding: .35rem .8rem; border: 1px solid #c9ded1; border-radius: 999px; background: #fffdf9; font-weight: 650; text-decoration: none; }
nav a:hover { background: #f0f9f3; }
main { padding-top: 2rem; padding-bottom: 3rem; }
h1 { margin: 0 0 1.3rem; font-size: clamp(1.7rem, 4.8vw, 2.45rem); line-height: 1.45; letter-spacing: .01em; }
h2 { margin: 1.7rem 0 .7rem; font-size: 1.3rem; line-height: 1.5; }
h3 { margin: .2rem 0 .6rem; font-size: 1.12rem; line-height: 1.5; }
p { margin: .65rem 0; }
.intro { padding: clamp(1rem, 3vw, 1.6rem); margin-bottom: 1.6rem; background: #eaf3ee; border: 1px solid #d6e9df; border-radius: 18px; }
.intro p { max-width: 68ch; }
.eyebrow { margin: 0; color: #2c6855; font-size: .88rem; font-weight: 800; letter-spacing: .08em; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 1rem; align-items: start; }
.card, .notice { background: var(--paper); border: 1px solid var(--border); border-radius: 16px; padding: clamp(1rem, 2.5vw, 1.45rem); margin: .65rem 0; box-shadow: 0 2px 10px rgb(16 54 39 / 4%); }
.card h2, .card h3 { margin-top: 0; }
.card dl { display: grid; grid-template-columns: minmax(5em, 7em) 1fr; column-gap: .6rem; row-gap: .25rem; margin: .8rem 0; }
.card dt { font-weight: 750; }
.card dd { min-width: 0; margin: 0; overflow-wrap: anywhere; }
.notice { border-left: 4px solid #80a994; }
.notice h2 { margin-top: 0; }
.muted, .source-credit { color: var(--muted); font-size: .88rem; }
.source-credit { border-top: 1px solid var(--border); margin-top: 1rem; padding-top: .7rem; }
.source-details { margin-top: .6rem; font-size: .88rem; }
.source-details summary { color: var(--brand); cursor: pointer; font-weight: 700; }
.source-details ul { padding-left: 1.15rem; overflow-wrap: anywhere; }
.source-details li + li { margin-top: .65rem; }
.ad-notice { font-weight: 800; padding: .45rem .75rem; margin: .65rem 0; background: #fff9e8; border: 1px solid #dfc995; border-radius: 8px; }
.travel-booking-reference { margin: 1.1rem 0; padding: .65rem; overflow-wrap: anywhere; border: 1px solid var(--border); border-radius: 8px; }
.tag { display: inline-block; padding: .1rem .55rem; background: #edf4e9; border-radius: 999px; color: #315642; font-size: .85rem; }
ul { padding-left: 1.3rem; }
.site-footer { border-top: 1px solid var(--border); background: #eef2ec; color: var(--muted); font-size: .88rem; }
.site-footer__inner { padding-top: 1.15rem; padding-bottom: 1.15rem; }
@media (max-width: 600px) {
  main { padding-top: 1.5rem; }
  nav a { font-size: .94rem; }
  .card dl { grid-template-columns: 1fr; row-gap: 0; }
  .card dd { margin-bottom: .45rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }