/* トップ・使い方・プライバシーポリシーなど、読むページの見た目 */
:root { --accent: #2a78d6; --line: #e2e2de; --muted: #6b6a66; --bg: #f7f7f5; --ink: #1f1f1d; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif; color: var(--ink); background: var(--bg); line-height: 1.7; }
main { max-width: 860px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 26px; margin: 0 0 6px; }
.lead { color: var(--muted); margin: 0 0 32px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.card { display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px; color: inherit; text-decoration: none; }
a.card:hover { border-color: var(--accent); box-shadow: 0 4px 16px rgba(42,120,214,.12); }
.card h2 { font-size: 17px; margin: 0 0 6px; display: flex; align-items: center; gap: 8px; }
.card p { margin: 0; color: var(--muted); font-size: 13.5px; }
.card.soon { opacity: .55; }
.tag { font-size: 11px; font-weight: 600; padding: 1px 8px; border-radius: 99px; background: #e8f1fc; color: var(--accent); }
.soon .tag { background: #ecece8; color: var(--muted); }
.note { margin-top: 32px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; font-size: 13.5px; }
.note h3 { font-size: 14px; margin: 0 0 6px; }
.note ul { margin: 0; padding-left: 1.2em; }
footer { margin-top: 28px; color: var(--muted); font-size: 12px; }
footer a { color: var(--muted); }
.links { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; font-size: 13.5px; }
.links a { color: var(--accent); text-decoration: none; }
.links a:hover { text-decoration: underline; }

/* 説明の文章 */
.back { display: inline-block; color: var(--muted); text-decoration: none; font-size: 13px; margin-bottom: 16px; }
.back:hover { color: var(--ink); }
article { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 28px 32px; }
article h2 { font-size: 19px; margin: 36px 0 10px; padding-top: 8px; border-top: 1px solid var(--line); }
article h2:first-of-type { margin-top: 8px; border-top: none; }
article h3 { font-size: 15px; margin: 22px 0 6px; }
article p, article li { font-size: 14.5px; }
article ul, article ol { padding-left: 1.4em; }
article table { border-collapse: collapse; width: 100%; font-size: 13.5px; margin: 8px 0 12px; }
article th, article td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
article th { background: #f4f4f1; font-weight: 600; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; background: #f1f1ee; padding: 1px 5px; border-radius: 4px; }
pre { background: #f6f6f3; border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; overflow-x: auto; font-size: 12.5px; line-height: 1.6; }
pre code { background: none; padding: 0; }
.kbd { display: inline-block; padding: 0 6px; border: 1px solid #d3d3ce; border-bottom-width: 2px; border-radius: 4px; font-size: 12px; background: #fafaf8; }
.toc { background: var(--bg); border-radius: 10px; padding: 12px 18px; margin-bottom: 8px; font-size: 14px; }
.toc ol { margin: 4px 0 0; }
.toc a { color: var(--accent); text-decoration: none; }
.tip { background: #eef5fd; border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 0 8px 8px 0; font-size: 13.5px; margin: 10px 0; }
@media (max-width: 600px) { article { padding: 20px 16px; } }