:root{--color-bg: #fafafa;--color-surface: #ffffff;--color-text: #222;--color-muted: #777;--color-border: #e5e5e5;--color-accent: #0a7;--color-accent-warm: #c30;--color-link: #06c;--max-width: 760px;--max-width-wide: 1080px;--font-sans: -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.7;font-size:16px}a{color:var(--color-link);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{max-width:var(--max-width);margin:0 auto;padding:24px 16px 64px}.container.wide{max-width:var(--max-width-wide)}header.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border)}header.site-header .inner{max-width:var(--max-width-wide);margin:0 auto;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px}header.site-header a.brand{font-weight:700;color:var(--color-text);font-size:1.05rem}header.site-header nav a{margin-left:16px;color:var(--color-muted);font-size:.9rem}footer.site-footer{border-top:1px solid var(--color-border);background:var(--color-surface);text-align:center;color:var(--color-muted);font-size:.85rem;padding:24px 16px;line-height:1.7}footer.site-footer p{margin:0 0 8px}footer.site-footer .site-footer-disclosure{font-size:.78rem;background:#fffaf0;border:1px solid #f0d8a0;border-radius:6px;padding:8px 12px;max-width:720px;margin:0 auto 16px}footer.site-footer a{color:var(--color-muted)}footer.site-footer .footnote{font-size:.78rem;color:#999}h1{font-size:1.6rem;line-height:1.4;margin:0 0 12px}h2{font-size:1.25rem;margin:32px 0 12px;padding-bottom:6px;border-bottom:2px solid var(--color-border)}h3{font-size:1.05rem;margin:24px 0 8px}article p{margin:0 0 1em}article ul,article ol{margin:0 0 1em;padding-left:1.5em}article code{background:#f0f0f0;padding:2px 5px;border-radius:3px;font-size:.9em}article pre{background:#1e1e1e;color:#e0e0e0;padding:14px;border-radius:6px;overflow-x:auto}article pre code{background:transparent;padding:0;color:inherit}article blockquote{border-left:4px solid var(--color-border);margin:1em 0;padding:4px 0 4px 14px;color:var(--color-muted)}article table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.92rem}article th,article td{border:1px solid var(--color-border);padding:6px 10px;text-align:left}article th{background:#f4f4f4}.meta{color:var(--color-muted);font-size:.85rem;margin-bottom:20px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:16px;margin-bottom:12px}.card h3{margin:0 0 6px;font-size:1rem}.card .meta{margin:0}.tag{display:inline-block;font-size:.75rem;padding:2px 8px;border-radius:999px;background:#eef;color:#336;margin-right:4px}@media(max-width:600px){body{font-size:15px}h1{font-size:1.35rem}h2{font-size:1.1rem}}