:root{--color-bg: #ffffff;--color-fg: #1a1a1a;--color-muted: #5c6470;--color-accent: #2563eb;--color-accent-soft: #eef3ff;--color-border: #e6e8eb;--color-card: #ffffff;--maxw: 760px;--maxw-wide: 1100px;--radius: 12px;--font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif}*{box-sizing:border-box}html{font-family:var(--font-sans);color:var(--color-fg);background:var(--color-bg);line-height:1.8;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{margin:0}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.container-wide{max-width:var(--maxw-wide);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--color-border);position:sticky;top:0;background:#ffffffd9;backdrop-filter:blur(8px);z-index:10}.site-header .inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:var(--maxw-wide);margin:0 auto}.brand{font-weight:800;font-size:1.15rem;color:var(--color-fg)}.brand span{color:var(--color-accent)}.nav{display:flex;gap:18px;flex-wrap:wrap;font-size:.9rem}.nav a{color:var(--color-muted)}.hero{padding:56px 0 32px;text-align:center}.hero h1{font-size:2rem;line-height:1.4;margin:0 0 12px}.hero p{color:var(--color-muted);font-size:1.05rem;margin:0 auto;max-width:560px}.grid{display:grid;gap:36px 28px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.card{background:none;border:none;padding:0}.card .thumb{display:block;aspect-ratio:16 / 9;border-radius:10px;overflow:hidden;margin-bottom:14px}.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}.card:hover .thumb img{transform:scale(1.03)}.card .cat{font-size:.75rem;color:var(--color-accent);font-weight:700}.card h3{margin:7px 0 6px;font-size:1.08rem;line-height:1.55}.card h3 a{color:var(--color-fg)}.card p{color:var(--color-muted);font-size:.9rem;margin:0}.card .meta{font-size:.78rem;color:var(--color-muted);margin-top:10px}.cat-list{display:grid;gap:0;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.cat-list .cat-item{padding:18px 0;border-top:1px solid var(--color-border)}.cat-list .cat-item h3{margin:0 0 4px;font-size:1.05rem}.cat-list .cat-item h3 a{color:var(--color-fg)}.cat-list .cat-item p{color:var(--color-muted);font-size:.9rem;margin:0}.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:44px 0 18px}.section-head h2{font-size:1.4rem;margin:0}.article-hero{margin:24px 0 8px;border-radius:14px;overflow:hidden;aspect-ratio:16 / 9}.article-hero img{width:100%;height:100%;object-fit:cover;display:block}.article-header{padding:40px 0 8px}.article-header .cat{color:var(--color-accent);font-weight:700;font-size:.85rem}.article-header h1{font-size:1.9rem;line-height:1.45;margin:10px 0 14px}.article-meta{color:var(--color-muted);font-size:.85rem}.prose{font-size:1.02rem}.prose h2{font-size:1.45rem;margin:2em 0 .6em;padding-bottom:.3em;border-bottom:2px solid var(--color-accent-soft)}.prose h3{font-size:1.18rem;margin:1.6em 0 .5em}.prose p{margin:1em 0}.prose ul,.prose ol{padding-left:1.4em}.prose li{margin:.4em 0}.prose blockquote{border-left:4px solid var(--color-accent);margin:1.2em 0;padding:.4em 1em;color:var(--color-muted);background:var(--color-accent-soft);border-radius:0 8px 8px 0}.prose table{border-collapse:collapse;width:100%;margin:1.4em 0;font-size:.92rem}.prose th,.prose td{border:1px solid var(--color-border);padding:10px 12px;text-align:left}.prose th{background:var(--color-accent-soft)}.prose code{background:#f3f4f6;padding:.15em .4em;border-radius:4px;font-size:.9em}.prose pre{padding:16px;border-radius:10px;overflow-x:auto}.tldr{border-left:3px solid var(--color-accent);padding:2px 0 2px 18px;margin:22px 0 28px}.tldr .label{font-size:.8rem;color:var(--color-accent);font-weight:700;margin:0 0 4px}.tldr p{margin:0;font-size:1.05rem;color:var(--color-fg)}.faq{margin:44px 0}.faq>h2{margin-bottom:8px}.faq details{border-bottom:1px solid var(--color-border);padding:2px 0}.faq summary{font-weight:700;cursor:pointer;padding:14px 24px 14px 0;list-style:none;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";position:absolute;right:4px;top:12px;color:var(--color-muted);font-weight:400}.faq details[open] summary:after{content:"–"}.faq details p{margin:0 0 14px;color:var(--color-muted)}.tags{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.tag{background:#f3f4f6;color:var(--color-muted);font-size:.78rem;padding:4px 10px;border-radius:999px}.site-footer{border-top:1px solid var(--color-border);margin-top:64px;padding:32px 0;color:var(--color-muted);font-size:.85rem}.site-footer .inner{max-width:var(--maxw-wide);margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}.cta{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);padding:28px 0;margin:48px 0 8px}.cta h2{margin:0 0 6px;font-size:1.2rem;border:none;padding:0}.cta p{margin:0 0 16px;color:var(--color-muted)}.btn{display:inline-block;background:var(--color-accent);color:#fff;font-weight:700;padding:11px 22px;border-radius:8px;font-size:.95rem}.btn:hover{background:#1d4ed8;text-decoration:none}.btn-outline{display:inline-block;border:1px solid var(--color-border);color:var(--color-fg);padding:11px 22px;border-radius:8px;font-weight:700;font-size:.95rem}.contact-form{display:grid;gap:16px;max-width:560px;margin:24px 0}.contact-form label{font-weight:700;font-size:.9rem;display:block;margin-bottom:6px}.contact-form input,.contact-form textarea{width:100%;padding:11px 13px;border:1px solid var(--color-border);border-radius:8px;font-family:inherit;font-size:1rem}.contact-form textarea{min-height:160px;resize:vertical}.view-count{color:var(--color-muted)}.ranking-section{margin:8px 0}.ranking{list-style:none;padding:0;margin:0;counter-reset:rank}.ranking li{display:flex;align-items:baseline;gap:14px;padding:14px 0;border-top:1px solid var(--color-border)}.ranking li:last-child{border-bottom:1px solid var(--color-border)}.ranking .rank-no{font-weight:800;color:var(--color-accent);font-size:1.1rem;min-width:1.4em}.ranking li a{color:var(--color-fg);font-weight:600;flex:1}.ranking .rank-views{color:var(--color-muted);font-size:.8rem;white-space:nowrap}.ranking .ranking-empty{color:var(--color-muted);font-size:.9rem;border:none;padding:10px 0}.related{margin:48px 0 8px}@media(max-width:600px){.hero h1{font-size:1.6rem}.article-header h1{font-size:1.5rem}}