:root { color-scheme: light; --green: #23614f; --soft: #e8f4ef; --ink: #1e2925; --muted: #61706a; --border: #dbe7e2; }
* { box-sizing: border-box; }
body { margin: 0; background: #f7fbf9; color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; line-height: 1.75; }
main { width: min(760px, calc(100% - 32px)); margin: 48px auto 24px; padding: 40px; background: white; border: 1px solid var(--border); border-radius: 24px; box-shadow: 0 16px 50px rgba(35, 97, 79, .08); }
.hero { display: flex; align-items: center; gap: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.hero img { border-radius: 22px; }
.eyebrow { margin: 0; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 4px 0 8px; font-size: clamp(30px, 7vw, 44px); line-height: 1.25; }
h2 { margin: 0 0 8px; font-size: 20px; }
p { margin: 0 0 12px; }
section { margin-top: 30px; }
a { color: var(--green); font-weight: 700; }
.button { display: inline-block; padding: 11px 16px; background: var(--green); color: white; border-radius: 12px; text-decoration: none; }
details { padding: 14px 0; border-bottom: 1px solid var(--border); }
summary { cursor: pointer; font-weight: 700; }
details p { margin: 10px 0 0; color: var(--muted); }
nav { margin-top: 32px; padding: 18px; background: var(--soft); border-radius: 14px; }
.back { display: inline-block; margin-bottom: 20px; text-decoration: none; }
.updated { color: var(--muted); font-size: 14px; }
footer { padding: 16px 0 40px; color: var(--muted); font-size: 13px; text-align: center; }
@media (max-width: 600px) { main { margin-top: 16px; padding: 24px 20px; border-radius: 18px; } .hero { align-items: flex-start; } .hero img { width: 64px; height: 64px; border-radius: 16px; } }