:root{color-scheme:light;--bg:#faf9f6;--ink:#1c2528;--muted:#657278;--line:#e2e6e1;--accent:#206b70}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.9 system-ui,-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif}a{color:var(--accent)}.site-header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:21px max(28px,calc((100vw - 1100px)/2));border-bottom:1px solid var(--line);background:#fff}.brand{text-decoration:none;letter-spacing:.12em;font-size:13px;font-weight:800;color:var(--ink)}.brand span{color:var(--accent)}nav{display:flex;gap:22px;flex-wrap:wrap}nav a{text-decoration:none;color:var(--muted);font-size:13px;font-weight:650}nav a:hover{color:var(--accent)}main{max-width:1100px;margin:auto;padding:0 28px 100px}.hero{padding:110px 0 85px;border-bottom:1px solid var(--line)}.eyebrow{letter-spacing:.20em;color:var(--accent);font-size:11px;font-weight:800}.hero h1{font:700 clamp(30px,4.5vw,54px)/1.55 "Yu Mincho","Hiragino Mincho ProN",serif;margin:20px 0}.lead{max-width:720px;font-size:18px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:45px 0}.tile{background:#fff;border:1px solid var(--line);padding:25px;text-decoration:none;color:var(--ink);border-radius:8px}.tile h2{font-size:21px;line-height:1.5}.tile p,.page-intro p,.book-item p{color:var(--muted)}.more{color:var(--accent);font-size:13px;font-weight:700}.page-intro{padding:70px 0 35px}.page-intro h1{font:700 clamp(28px,3vw,40px)/1.5 "Yu Mincho",serif}.book-item{display:flex;gap:24px;padding:25px 0;border-bottom:1px solid var(--line)}.volume{flex:0 0 110px;font-size:11px;color:var(--accent);letter-spacing:.08em}.book-item h2{margin:0}.book-item p{margin:6px 0}.book-item small{color:var(--muted)}footer{max-width:1100px;margin:auto;padding:22px 28px 55px;color:var(--muted);border-top:1px solid var(--line);font-size:12px}@media(max-width:750px){.site-header{display:block;padding:16px 20px}nav{gap:14px;margin-top:12px}.hero{padding:60px 0}.cards{grid-template-columns:1fr}.book-item{display:block}.volume{display:block;margin-bottom:10px}}
