:root {
  --bg: #fff8fa; --surface: #ffffff; --text: #1d1b26; --muted: #5d5a6b;
  --line: #f0dbe3; --accent: #e8336d; --navy: #2b2b8f;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15141c; --surface: #1e1d28; --text: #f3f1f8; --muted: #b3afc2; --line: #34313f; --accent: #ff6b9a; --navy: #9c9cff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif; line-height: 1.75; }
a { color: var(--accent); }
header.site { border-bottom: 1px solid var(--line); background: var(--surface); }
header.site .inner, main, footer.site .inner { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.site .inner { display: flex; align-items: center; gap: 12px; height: 64px; }
header.site img { width: 36px; height: 36px; border-radius: 8px; }
header.site a.brand { font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: .02em; }
header.site nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
header.site nav a { color: var(--muted); text-decoration: none; }
header.site nav a:hover { color: var(--accent); }
main { padding-top: 40px; padding-bottom: 56px; }
h1 { font-size: 30px; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 40px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 24px 0 4px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.lang-switch { font-size: 14px; color: var(--muted); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; margin: 16px 0; }
.hero { text-align: center; padding: 24px 0 8px; }
.hero img { width: 120px; height: 120px; border-radius: 24px; box-shadow: 0 8px 24px rgba(232,51,109,.18); }
.hero p { color: var(--muted); max-width: 560px; margin: 8px auto 0; }
ul { padding-left: 1.3em; }
li { margin: 4px 0; }
hr.lang { border: 0; border-top: 2px dashed var(--line); margin: 56px 0 8px; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 20px 0 32px; }
footer.site .inner { display: flex; flex-wrap: wrap; gap: 8px 16px; }
footer.site a { color: var(--muted); }
.card h3:first-child { margin-top: 0; }