:root{--color-bg: #fdfaf5;--color-surface: #ffffff;--color-text: #33302c;--color-muted: #6f6a62;--color-primary: #b7462d;--color-primary-dark: #96371f;--color-border: #e8e1d5;--color-accent-bg: #f7efe2;--radius: 10px;--font-sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif}*{box-sizing:border-box}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.8;-webkit-text-size-adjust:100%}a{color:var(--color-primary)}img{max-width:100%;height:auto}.container{max-width:800px;margin:0 auto;padding:0 16px}.site-header{background:var(--color-surface);border-bottom:3px solid var(--color-primary)}.header-inner{padding-top:14px;padding-bottom:14px}.site-logo{font-size:1.5rem;font-weight:700;color:var(--color-text);text-decoration:none}.site-tagline{margin:2px 0 0;font-size:.8rem;color:var(--color-muted)}.site-footer{margin-top:56px;padding:28px 0;background:var(--color-surface);border-top:1px solid var(--color-border);font-size:.9rem}.footer-nav{display:flex;flex-wrap:wrap;gap:8px 20px}.footer-nav a{color:var(--color-muted);text-decoration:none}.footer-nav a:hover{color:var(--color-primary)}.copyright{margin-top:12px;color:var(--color-muted);font-size:.8rem}main h1{font-size:1.6rem;line-height:1.4;margin:28px 0 12px}.section-title{font-size:1.25rem;margin:40px 0 16px;padding-left:10px;border-left:4px solid var(--color-primary)}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;padding:0;list-style:none;margin:0}.category-card{display:block;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--color-text)}.category-card:hover{border-color:var(--color-primary)}.category-card .name{font-weight:700}.category-card .desc{margin:6px 0 0;font-size:.82rem;color:var(--color-muted);line-height:1.6}.article-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}.article-card{display:block;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--color-text)}.article-card:hover{border-color:var(--color-primary)}.article-card .title{font-weight:700;line-height:1.5}.article-card .meta{margin-top:6px;font-size:.78rem;color:var(--color-muted);display:flex;flex-wrap:wrap;gap:4px 12px}.chip{display:inline-block;background:var(--color-accent-bg);color:var(--color-primary-dark);border-radius:999px;padding:1px 10px;font-size:.75rem;text-decoration:none}.article-meta{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.82rem;color:var(--color-muted);margin-bottom:20px}.prose{font-size:1rem}.prose h2{font-size:1.3rem;margin:44px 0 16px;padding:10px 14px;background:linear-gradient(90deg,var(--color-accent-bg),rgba(247,239,226,.3));border-left:6px solid var(--color-primary);border-radius:6px}.prose h3{font-size:1.1rem;margin:28px 0 10px;padding-left:10px;border-left:4px solid var(--color-primary)}.prose table{border-collapse:collapse;width:100%;margin:16px 0;font-size:.9rem;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--color-border);padding:8px 12px;text-align:left}.prose th{background:var(--color-accent-bg);border-bottom:2px solid var(--color-primary);white-space:nowrap}.prose tbody tr:nth-child(2n){background:#faf5ec}.prose ul li::marker{color:var(--color-primary)}.prose ol li::marker{color:var(--color-primary);font-weight:700}.prose img{display:block;margin:20px auto;border-radius:10px}.prose .box-point,.prose .box-caution{border-radius:var(--radius);padding:14px 18px;margin:20px 0;font-size:.95rem}.prose .box-point{background:#f3f8f2;border:1px solid #cfe3cc}.prose .box-caution{background:#fdf3ec;border:1px solid #f0d4c0}.prose .hitokoto{margin:36px 0 8px;background:var(--color-accent-bg);border:1px dashed var(--color-primary);border-radius:var(--radius);padding:14px 18px;font-size:.92rem}.prose blockquote{margin:16px 0;padding:10px 16px;border-left:4px solid var(--color-border);color:var(--color-muted);background:var(--color-surface)}.prose ul,.prose ol{padding-left:1.4em}.note-box{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:16px 20px;font-size:.9rem}.btn{display:inline-block;background:var(--color-primary);color:#fff;padding:10px 24px;border-radius:999px;text-decoration:none;font-weight:700}.btn:hover{background:var(--color-primary-dark)}