/* 赤ちゃんと論文 公式サイト（ブランドの夜空ネイビー・月の黄色・ピンク） */
:root { --bg: #fff8ee; --card: #ffffff; --ink: #2a2440; --mute: #6f6987; --line: #eadfce; --night: #1d2547; --moon: #ffd66b; --rose: #d94f7a; --ok: #23704f; color-scheme: light; }
@media (prefers-color-scheme: dark) { :root { --bg: #11162b; --card: #1d2547; --ink: #eef0fa; --mute: #a3abd0; --line: #333d70; --rose: #ff8fab; --ok: #8ee3c3; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.8 "Hiragino Maru Gothic ProN", "Zen Maru Gothic", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; }
a { color: var(--rose); }
.top { background: var(--night); padding: 14px 16px; }
.brand { color: #fff; text-decoration: none; font-weight: 800; display: inline-flex; align-items: center; gap: 10px; max-width: 880px; }
.dot { width: 14px; height: 14px; border-radius: 50%; background: var(--moon); box-shadow: 0 0 12px var(--moon); }
main { max-width: 880px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: clamp(24px, 5vw, 36px); line-height: 1.35; margin: 8px 0 12px; }
h2 { font-size: 20px; margin: 36px 0 10px; padding-left: 10px; border-left: 5px solid var(--moon); }
.hero-top { background: var(--night); color: #fff; border-radius: 20px; padding: 28px 22px; margin-top: 8px; }
.hero-top p { color: #d8dcf2; }
.links { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.btn { display: inline-block; background: var(--moon); color: #2a2440; font-weight: 800; padding: 10px 18px; border-radius: 999px; text-decoration: none; }
.btn.ghost { background: transparent; color: inherit; border: 2px solid currentColor; }
.note, .date { color: var(--mute); font-size: 14px; }
.cards { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.cards a { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; text-decoration: none; color: var(--ink); }
.cards img, .hero { width: 100%; height: auto; display: block; aspect-ratio: 16 / 9; object-fit: cover; }
.hero { border-radius: 16px; }
.cards .date, .cards b { display: block; padding: 0 14px; } .cards .date { padding-top: 10px; } .cards b { padding-bottom: 14px; line-height: 1.5; }
.lead { font-size: 17px; }
.refs li, .cannot li, .help li { margin: 10px 0; }
.refs .au { font-weight: 700; } .refs small { display: block; color: var(--mute); }
.tag { display: inline-block; font-size: 12px; font-weight: 800; padding: 1px 8px; border-radius: 99px; margin-left: 6px; border: 1px solid currentColor; }
.tag.ok { color: var(--ok); } .tag.pre { color: var(--rose); }
.policy h2 { font-size: 18px; } .policy li { margin: 6px 0; }
footer { border-top: 1px solid var(--line); text-align: center; color: var(--mute); font-size: 13px; padding: 20px 16px 32px; }
footer p { margin: 4px 0; }