:root { --fg: #222; --muted: #5a6470; --accent: #1f5f8b; --line: #d9dee3; --bg: #fff; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "Yu Gothic", "Hiragino Sans", sans-serif; color: var(--fg); background: var(--bg); line-height: 1.8; }
a { color: var(--accent); }
.site-header, .site-footer, main { max-width: 46rem; margin: 0 auto; padding: 1rem 1.25rem; }
.site-header { border-bottom: 1px solid var(--line); }
.brand { font-size: 1.25rem; font-weight: 700; text-decoration: none; color: var(--fg); }
.tagline { margin-left: .75rem; color: var(--muted); font-size: .9rem; }
.site-header nav { margin-top: .5rem; display: flex; flex-wrap: wrap; gap: .25rem 1rem; }
h1 { font-size: 1.6rem; line-height: 1.4; margin: 1rem 0; }
h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
.lead { font-size: 1.05rem; color: var(--muted); }
.date { margin: 1rem 0 0; color: var(--muted); font-size: .9rem; }
img.hero { max-width: 100%; height: auto; display: block; margin: 0 0 1rem; }
.video iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; margin: 0 0 1rem; }
.yt-placeholder { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #111; text-align: center; }
.yt-placeholder a { color: #fff; font-size: 1.1rem; text-decoration: none; padding: 1rem; }
.yt-placeholder small { display: block; font-size: .75rem; color: #ccc; }
.news-list { list-style: none; padding: 0; }
.news-list li { padding: .5rem 0; border-bottom: 1px solid var(--line); }
.news-list time { color: var(--muted); font-size: .9rem; margin-right: .5rem; }
.summary { color: var(--muted); display: block; font-size: .9rem; }
.faq details { border: 1px solid var(--line); border-radius: 6px; padding: .5rem .75rem; margin: .5rem 0; }
.faq summary { cursor: pointer; font-weight: 700; }
.site-footer { border-top: 1px solid var(--line); margin-top: 3rem; color: var(--muted); font-size: .9rem; }
.footer-links { list-style: none; padding: 0; display: flex; gap: 1rem; flex-wrap: wrap; }
@media (max-width: 480px) { h1 { font-size: 1.35rem; } }