@font-face {
  font-family: Inter;
  src: url('/Inter-Regular.ttf');
  font-display: swap;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; background: #f7f5ef; color: #1f2937; font: 17px/1.7 Inter, system-ui, sans-serif; }
header, main, footer { max-width: 880px; margin: auto; padding: 30px 28px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid #d9ded6; }
.brand { color: #0f4d3a; font-size: 48px; font-weight: 800; letter-spacing: -3px; text-decoration: none; }
header nav { display: flex; gap: 24px; }
a { color: #0f4d3a; text-underline-offset: 5px; overflow-wrap: anywhere; }
a:focus-visible, summary:focus-visible { outline: 3px solid #0f4d3a; outline-offset: 5px; border-radius: 3px; }
.skip-link { position: absolute; top: 12px; left: 12px; transform: translateY(-160%); padding: 8px 16px; background: #fff; z-index: 2; }
.skip-link:focus { transform: none; }
main { padding-top: 48px; padding-bottom: 70px; min-height: 60vh; }
h1 { margin-top: 12px; font-size: clamp(35px, 6vw, 58px); line-height: 1.15; letter-spacing: -2px; color: #0f4d3a; }
h2 { font-size: 23px; line-height: 1.3; margin-top: 42px; }
h3 { font-size: 18px; line-height: 1.45; margin-top: 28px; }
p, ul { max-width: 720px; }
ul { padding-left: 24px; }
li + li { margin-top: 14px; }
small, footer, .updated, .operator { color: #536459; }
footer { border-top: 1px solid #d9ded6; font-size: 14px; }
.notice { border-left: 4px solid #6b8f7a; padding: 12px 20px; background: #e7eee7; }
.intro { font-size: 22px; line-height: 1.5; }
.eyebrow { margin: 0; color: #536459; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; }
.updated { font-size: 14px; }
.contents { display: flex; flex-wrap: wrap; gap: 10px 22px; max-width: 720px; padding: 22px 0; margin-top: 22px; border-top: 1px solid #d9ded6; border-bottom: 1px solid #d9ded6; font-size: 15px; }
.contact-card { max-width: 720px; padding: 22px 26px; margin: 32px 0 42px; border: 1px solid #d9ded6; border-radius: 20px; background: #fff; }
.contact-card h2 { margin: 0 0 12px; }
.contact-card p:last-child { margin-bottom: 0; }
details { max-width: 720px; border-bottom: 1px solid #d9ded6; }
summary { padding: 18px 4px; cursor: pointer; font-weight: 600; color: #0f4d3a; }
details p { padding: 0 4px 8px; margin-top: 0; }
.operator { margin-top: 40px; font-size: 15px; }
@media (max-width: 520px) {
  header, main, footer { padding-left: 22px; padding-right: 22px; }
  header { align-items: flex-start; gap: 12px; }
  header nav { gap: 12px; flex-direction: column; font-size: 14px; }
  main { padding-top: 32px; }
  .intro { font-size: 20px; }
  .contact-card { padding: 20px; }
}