:root{--ink:#1b1f2a;--ink2:#4b5260;--paper:#faf7f2;--line:#e6e0d6;--teal:#0f5c5a;--teal2:#e3efee;--gold:#c9a227;--navy:#1e2a44;--wine:#8a1c2b;}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic","Meiryo",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
.serif{font-family:"Hiragino Mincho ProN","Noto Serif JP","Yu Mincho",serif}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:10;background:rgba(250,247,242,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand .mark{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.brand b{font-size:15px;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.brand small{display:block;font-size:10px;color:var(--ink2);letter-spacing:.18em;text-transform:uppercase}
.links{display:flex;gap:26px;font-size:14px}
.links a{opacity:.85}.links a:hover,.links a.on{opacity:1;color:var(--teal)}
.btn{display:inline-block;padding:10px 18px;border-radius:999px;background:var(--ink);color:#fff;font-size:14px;font-weight:600;white-space:nowrap}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn.gold{background:var(--gold);color:var(--ink)}
.btn.amz{background:#f3a847;color:#1b1f2a}
.hero{padding:72px 0 48px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{display:inline-flex;gap:10px;align-items:center;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);font-weight:700}
.kicker::before{content:"";width:28px;height:1.5px;background:var(--teal)}
h1{font-size:46px;line-height:1.3;margin:18px 0 20px;letter-spacing:.01em;font-weight:600}
h1 em{font-style:normal;background:linear-gradient(transparent 62%,#f1dc8f 62%)}
.lead{font-size:16px;color:var(--ink2);max-width:520px;margin:0 0 28px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.shelf3d{position:relative;height:420px}
.shelf3d img{position:absolute;width:190px;border-radius:6px;box-shadow:0 24px 50px -18px rgba(0,0,0,.45),0 2px 6px rgba(0,0,0,.15)}
.shelf3d .a{left:0;top:60px;transform:rotate(-6deg)}.shelf3d .b{left:140px;top:10px;z-index:2}.shelf3d .c{left:290px;top:70px;transform:rotate(6deg)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:8px 0 64px}
.stat{padding:22px 8px;border-right:1px solid var(--line)}.stat:last-child{border-right:0}
.stat b{display:block;font-size:32px;line-height:1.1;font-weight:600}.stat b small{font-size:15px}.stat span{font-size:12px;color:var(--ink2);letter-spacing:.08em}
section{padding:36px 0}
.sechead{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:22px;gap:12px;flex-wrap:wrap}
h2{font-size:28px;margin:0;font-weight:600}.sechead small{font-size:13px;color:var(--ink2)}
.entries{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.entry{border:1px solid var(--line);border-radius:16px;padding:22px;background:#fff;transition:.2s}.entry:hover{transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(0,0,0,.35)}
.entry .n{font-size:11px;letter-spacing:.2em;color:var(--teal);font-weight:700}.entry h3{margin:8px 0 6px;font-size:18px}.entry p{margin:0;font-size:13px;color:var(--ink2)}
.feature{display:grid;grid-template-columns:260px 1fr;gap:40px;background:var(--navy);color:#fff;border-radius:24px;padding:40px;align-items:center}
.feature img{width:100%;border-radius:8px;box-shadow:0 20px 40px -16px rgba(0,0,0,.6)}
.feature .k{color:var(--gold);font-size:12px;letter-spacing:.2em;font-weight:700}
.feature h3{font-size:30px;margin:10px 0 8px;line-height:1.35}.feature p{color:#cfd6e4;font-size:15px;margin:0 0 20px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.filters button{border:1px solid var(--line);background:#fff;padding:8px 16px;border-radius:999px;font-size:13px;cursor:pointer;font-family:inherit}.filters button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px 18px}
.book{display:block}.book .cover{position:relative;aspect-ratio:5/8;border-radius:6px;overflow:hidden;box-shadow:0 10px 24px -12px rgba(0,0,0,.4);transition:.2s;background:#eee}.book:hover .cover{transform:translateY(-4px)}
.book img{width:100%;height:100%;object-fit:cover;display:block}
.tag{position:absolute;top:8px;left:8px;background:var(--wine);color:#fff;font-size:10px;padding:3px 8px;border-radius:999px;font-weight:700}
.book .sub{font-size:10px;color:var(--ink2);margin:10px 0 2px;line-height:1.4}.book h3{font-size:13px;margin:0;line-height:1.45;font-weight:600}.book .note{font-size:11px;color:var(--ink2);margin:4px 0 0}
.hide{display:none}
.try{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.trycard{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}
.trycard .q{font-size:12px;color:var(--teal);letter-spacing:.15em;font-weight:700}.trycard p.st{font-size:16px;margin:10px 0 16px;min-height:3.2em}
.ox{display:flex;gap:10px}.ox button{flex:1;text-align:center;padding:12px;border:1.5px solid var(--ink);border-radius:12px;font-weight:700;font-size:20px;background:#fff;cursor:pointer;font-family:inherit}
.ox button.ok{background:var(--teal2);border-color:var(--teal)}.ox button.ng{background:#fbe9ec;border-color:var(--wine)}
.ans{margin-top:14px;font-size:14px;color:var(--ink2);border-top:1px dashed var(--line);padding-top:12px;display:none}.ans b{color:var(--ink)}
.trycard .ctl{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:13px;color:var(--ink2)}
.trycard .ctl button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;cursor:pointer;font-family:inherit;font-size:13px}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.post{border-top:2px solid var(--ink);padding-top:14px;display:block}.post .d{font-size:12px;color:var(--ink2)}.post h3{font-size:16px;margin:6px 0 6px;line-height:1.5}.post p{font-size:13px;color:var(--ink2);margin:0}
.author{display:grid;grid-template-columns:120px 1fr;gap:30px;align-items:center;background:var(--teal2);border-radius:24px;padding:36px}
.avatar{width:120px;height:120px;border-radius:50%;background:var(--teal);display:grid;place-items:center;color:#fff;font-size:40px}
.author h3{margin:0 0 6px;font-size:22px}.author p{margin:0;font-size:14px;color:var(--ink2)}
.social{display:flex;gap:14px;margin-top:12px;font-size:13px;flex-wrap:wrap}.social a{border-bottom:1px solid var(--ink)}
footer{border-top:1px solid var(--line);padding:40px 0;font-size:12px;color:var(--ink2);margin-top:40px}
.fcols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px;margin-bottom:24px}footer h4{margin:0 0 8px;font-size:12px;color:var(--ink)}footer ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
/* 下層ページ */
.page{padding:48px 0 24px}.page h1{font-size:34px;margin:8px 0 14px}.crumb{font-size:12px;color:var(--ink2)}.crumb a{border-bottom:1px solid var(--line)}
.prose{max-width:760px;font-size:15.5px}.prose p{margin:0 0 1.1em}.prose h2{font-size:22px;margin:2em 0 .7em;padding-bottom:.3em;border-bottom:1px solid var(--line)}.prose h3{font-size:18px;margin:1.6em 0 .5em}
.prose table{border-collapse:collapse;width:100%;font-size:14px;margin:1em 0 1.4em}.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;vertical-align:top;text-align:left}.prose th{background:#fff}
.prose ul{padding-left:1.4em}.prose li{margin:.3em 0}
.bookpage{display:grid;grid-template-columns:300px 1fr;gap:44px;align-items:start}
.bookpage .cv img{width:100%;border-radius:8px;box-shadow:0 20px 40px -16px rgba(0,0,0,.45)}
.bookpage .buy{display:grid;gap:10px;margin-top:18px}.bookpage .buy .btn{text-align:center}
.bookpage .meta{font-size:13px;color:var(--ink2);margin:14px 0 0;line-height:1.9}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0 0}.chip{font-size:11px;border:1px solid var(--ink);border-radius:999px;padding:2px 10px}
.bookpage h1{font-size:30px;margin:6px 0 4px}.bookpage .sub{font-size:16px;color:var(--ink2);margin:0 0 6px}.bookpage .series{font-size:13px;color:var(--teal);letter-spacing:.08em;font-weight:700}
.box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;margin:28px 0 0;font-size:14px}.box h3{margin:0 0 8px;font-size:15px}
.related{margin-top:40px}.related .grid{grid-template-columns:repeat(5,1fr)}
.notelist{display:grid;gap:18px;max-width:760px}.notelist .post h3{font-size:19px}
.art-meta{font-size:13px;color:var(--ink2);margin-bottom:24px}.art-meta span{margin-right:14px}
.disc{font-size:12px;color:var(--ink2);border-top:1px solid var(--line);padding-top:12px;margin-top:40px;max-width:760px}
@media(max-width:860px){.hero{grid-template-columns:1fr;padding-top:40px}.shelf3d{height:300px;transform:scale(.75);transform-origin:left top}h1{font-size:32px}.stats,.entries{grid-template-columns:repeat(2,1fr)}.grid,.related .grid{grid-template-columns:repeat(2,1fr)}.feature,.try,.posts,.author,.bookpage{grid-template-columns:1fr}.links{display:none}.fcols{grid-template-columns:1fr 1fr}.bookpage .cv{max-width:260px}.brand b{font-size:13px}}