/* 紙の色。グラデーションは使わない。スマホの幅を先に作る */
:root {
  --bg: #FBF6EC; --paper: #FFFDF8; --ink: #3A2E24; --muted: #6E6155; --line: #E8DCC4;
  --accent: #F5E3BF; --link: #8A5A1E; --radius: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
[lang="ja"] { font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif; }
[lang="ko"] { font-family: -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif; word-break: keep-all; }
[lang="zh-Hant"] { font-family: -apple-system, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif; }
[lang="zh-Hans"] { font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 17px; line-height: 1.75; }
a { color: var(--link); }
a:focus-visible { outline: 3px solid var(--link); outline-offset: 2px; }
.wrap { max-width: 680px; margin: 0 auto; padding: 0 16px; }
h1 { font-size: 30px; line-height: 1.3; margin: 8px 0 12px; }
h2 { font-size: 19px; line-height: 1.4; margin: 32px 0 10px; }
p { margin: 0 0 14px; }
ul, ol { padding-left: 1.3em; margin: 0 0 14px; }
li { margin-bottom: 6px; }
.lead { font-size: 19px; }
.small { font-size: 14px; color: var(--muted); }

.top { border-bottom: 1px solid var(--line); }
.top .wrap { padding-top: 14px; padding-bottom: 14px; }
.brand { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; }

.hero { padding: 40px 0 8px; }
.links { list-style: none; padding: 0; display: grid; gap: 10px; margin-top: 24px; }
.links a { display: block; padding: 14px 18px; border-radius: var(--radius); background: var(--accent); color: var(--ink); font-weight: 700; text-decoration: none; }

.legal { padding-top: 24px; }
.box { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 16px 0; }
.care { background: var(--accent); border-radius: var(--radius); padding: 16px 18px; margin: 28px 0 0; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { font-weight: 700; cursor: pointer; }
details p { margin: 8px 0 0; }

.foot { margin-top: 56px; border-top: 1px solid var(--line); padding: 20px 0 40px; font-size: 15px; }
.foot-links, .langs { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 12px; }
.langs a { color: var(--muted); text-decoration: none; font-size: 14px; }
.langs a[aria-current] { color: var(--ink); font-weight: 700; }