:root { color-scheme: light; --fg: #1d2b2a; --muted: #5c6b6a; --accent: #00695c; --bg: #f4f9f8; --card: #ffffff; --line: #d6e3e1; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Segoe UI", sans-serif; color: var(--fg); background: var(--bg); line-height: 1.7; }
header { background: var(--accent); color: #fff; }
header .inner { max-width: 760px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
header a { color: #fff; text-decoration: none; }
header .brand { font-weight: 700; font-size: 1.15rem; }
header nav a { margin-left: 14px; font-size: 0.95rem; opacity: 0.92; }
main { max-width: 760px; margin: 0 auto; padding: 28px 20px 60px; }
h1 { font-size: 1.6rem; margin: 0 0 6px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; border-left: 4px solid var(--accent); padding-left: 10px; }
p, li { font-size: 1rem; }
.lead { color: var(--muted); margin-top: 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.95rem; background: var(--card); }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #e8f2f0; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap table { min-width: 640px; }
.table-wrap + p { margin-top: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin: 14px 0; }
.meta { color: var(--muted); font-size: 0.9rem; }
footer { max-width: 760px; margin: 0 auto; padding: 16px 20px 40px; color: var(--muted); font-size: 0.85rem; }
a { color: var(--accent); }