:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; color: #27374c; background: #fffdf7; font-size: 100%; line-height: 1.8; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #1d6095; text-underline-offset: .2em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid #ae491e; outline-offset: 5px; border-radius: 4px; }
.skip-link { position: absolute; top: -8rem; left: 1rem; padding: .6rem 1rem; background: white; z-index: 10; }
.skip-link:focus { top: 1rem; }
.site-header, main, footer { max-width: 1080px; padding-inline: clamp(20px, 5vw, 56px); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 24px; border-bottom: 1px solid #e9e3d6; }
.brand { display: flex; align-items: center; gap: 12px; color: #27374c; text-decoration: none; font-size: 20px; font-weight: 800; line-height: 1.35; }
.brand small { display: block; font-size: 14px; font-weight: 600; color: #59677a; }
.brand-mark { width: 32px; height: 40px; display: block; flex-shrink: 0; border: 3px solid #27374c; border-radius: 10px; background: linear-gradient(140deg, #9ad2f1 0 45%, #ffdd75 45% 72%, #ffac88 72%); transform: rotate(-7deg); }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
nav a { min-height: 44px; display: inline-flex; align-items: center; font-size: 15px; font-weight: 650; }
section, aside { scroll-margin-top: 24px; }
.intro { padding-block: 54px 40px; max-width: 750px; }
.eyebrow { font-size: 14px; letter-spacing: .08em; font-weight: 750; color: #576774; margin: 0 0 12px; }
h1 { font-size: clamp(32px, 4.4vw, 46px); line-height: 1.35; letter-spacing: -.03em; margin: 0 0 20px; }
h2 { font-size: 26px; line-height: 1.5; margin: 0 0 22px; }
h3 { font-size: 20px; line-height: 1.5; margin: 10px 0 16px; }
p { margin: 0 0 16px; }
.lead { font-size: 18px; color: #506074; }
.contact { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 6px 16px; background: #e1f0fa; border: 2px solid #acd2e9; border-radius: 18px; padding: 12px 20px; font-weight: 750; text-decoration: none; margin-block: 8px 14px; }
.contact span { font-weight: 600; }
.contact-note, .site-note { font-size: 14px; color: #576477; }
.help-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
article { min-width: 0; padding: 26px; background: white; border: 1px solid #e7e1d5; border-radius: 24px; }
article p:last-child, .notice p:last-child { margin-bottom: 0; }
.topic { display: inline-block; padding: 4px 12px; border-radius: 10px; background: #e1f0fa; font-size: 14px; font-weight: 750; color: #325774; }
.topic.yellow { background: #fff0bf; color: #765600; }
.topic.coral { background: #ffe4d6; color: #854121; }
.notice { padding: 28px; border: 1px solid #e4d6ad; border-radius: 24px; background: #fff7df; margin-block: 32px; }
.notice h2 { font-size: 22px; margin-bottom: 16px; }
.contact-section { padding-block: 12px 36px; }
.english { border-top: 1px solid #e9e3d6; padding-block: 44px; }
dl { margin-block: 28px; }
dt { font-weight: 750; font-size: 18px; margin-top: 26px; }
dd { margin: 8px 0 0; }
.back-link { display: inline-block; padding-block: 12px; }
footer { border-top: 1px solid #e9e3d6; padding-block: 28px 36px; }
footer p { font-size: 15px; }
.site-note { max-width: 900px; }
.error-page { min-height: 65vh; padding-block: 70px; }
@media (max-width: 700px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 20px; }
  .intro { padding-block: 36px; }
  .help-grid { grid-template-columns: 1fr; }
  article, .notice { padding: 22px; border-radius: 20px; }
  .contact { display: flex; }
}
@media print {
  :root { background: white; color: black; }
  .site-header nav, .skip-link, .back-link { display: none; }
  .help-grid { display: block; }
  article { break-inside: avoid; margin-bottom: 16px; }
  a { color: inherit; }
}