:root{--ink:#1f2328;--sub:#59636e;--line:#d9dee3;--bg:#ffffff;--paper:#f6f4ef;--accent:#b42318;--accent-soft:#fbeae7}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,system-ui,sans-serif;line-height:1.9;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.serif{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif}
.wrap{max-width:720px;margin:0 auto;padding:0 16px}
header.top{position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--line);z-index:5}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.brand{font-weight:700;letter-spacing:.04em;color:var(--ink)}
.brand small{display:block;font-weight:400;font-size:11px;color:var(--sub);line-height:1.2}
nav.menu{display:flex;gap:14px;font-size:13px;white-space:nowrap}
nav.menu a{color:var(--sub)}
.brand{white-space:nowrap}
@media (max-width:480px){nav.menu{gap:10px;font-size:12px}nav.menu a.sub{display:none}}
.hero{padding:40px 0 20px;text-align:center}
.hero h1{font-size:30px;line-height:1.4;margin:0 0 10px;letter-spacing:.02em}
@media (max-width:480px){.hero h1{font-size:24px}}
.hero p{margin:0;color:var(--sub);font-size:15px}
.pages{display:flex;flex-direction:column;gap:14px;padding:10px 0 20px}
.pages img{display:block;width:100%;height:auto;aspect-ratio:2/3;border:1px solid var(--line);background:#fafafa}
.pages .n{text-align:center;font-size:12px;color:var(--sub);margin-top:-6px}
section{padding:40px 0;border-top:1px solid var(--line)}
section h2{font-size:22px;margin:0 0 18px;letter-spacing:.04em}
section h2 small{display:block;font-size:12px;color:var(--sub);font-weight:400;letter-spacing:.1em}
.cta{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:24px 20px;text-align:center;margin:10px 0 0}
.cta h3{margin:0 0 8px;font-size:20px}
.cta p{margin:0 0 14px;font-size:14px;color:var(--sub)}
form.reg{display:flex;gap:8px;max-width:440px;margin:0 auto}
form.reg input{flex:1;min-width:0;font-size:16px;padding:12px 14px;border:1px solid #b9c0c7;border-radius:8px}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;padding:12px 20px;border-radius:8px;border:0;font-size:16px;cursor:pointer;white-space:nowrap}
.btn:hover{text-decoration:none;opacity:.92}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);font-weight:600}
.note{font-size:12px;color:var(--sub);margin:12px 0 0}
.msg{font-size:14px;margin:12px 0 0;min-height:1.5em}
.msg.err{color:var(--accent)}
.prof p{margin:0 0 12px}
.tl{list-style:none;padding:0;margin:0}
.tl li{display:grid;grid-template-columns:84px 1fr;gap:12px;padding:8px 0;border-bottom:1px dashed var(--line)}
.tl li b{color:var(--sub);font-weight:600;font-size:14px}
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:560px){.books{grid-template-columns:1fr 1fr 1fr;gap:8px}.book{padding:8px}.book .t{font-size:12px}.book .p{font-size:11px}}
.book{border:1px solid var(--line);border-radius:10px;padding:14px;background:#fff}
.book img{display:block;width:100%;height:auto;aspect-ratio:480/720;object-fit:contain;border:1px solid var(--line);background:#fafafa;margin-bottom:10px}
.book:hover{border-color:#b9c0c7;text-decoration:none}
.book .t{font-weight:700;line-height:1.5;display:block;margin-bottom:4px;color:var(--ink)}
.book .p{font-size:13px;color:var(--sub)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:560px){.cards{grid-template-columns:1fr}}
.card{display:block;border:1px solid var(--line);border-radius:10px;padding:16px;color:var(--ink);background:#fff}
.card:hover{border-color:#b9c0c7;text-decoration:none}
.card b{display:block;margin-bottom:4px}
.card span{font-size:13px;color:var(--sub)}
.links{display:flex;flex-wrap:wrap;gap:10px}
.links a{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:14px;color:var(--ink)}
.en{font-family:Georgia,"Times New Roman",serif;line-height:1.7}
form.contact{display:grid;gap:10px;max-width:520px}
form.contact label{font-size:14px;color:var(--sub)}
form.contact input,form.contact textarea{width:100%;font-size:16px;padding:10px 12px;border:1px solid #b9c0c7;border-radius:8px;font-family:inherit}
form.contact textarea{min-height:140px}
.hp{position:absolute;left:-9999px;top:-9999px}
footer{border-top:1px solid var(--line);padding:30px 0 40px;font-size:13px;color:var(--sub)}
footer .wrap{display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between}
/* 電子書籍プレゼントの申込ページ（/guide/） */
.g-hero{display:grid;grid-template-columns:1fr 230px;gap:28px;align-items:center;padding:40px 0 30px}
@media (max-width:640px){.g-hero{grid-template-columns:1fr;gap:20px;padding:28px 0 20px}.g-hero .cv{order:-1;max-width:200px;margin:0 auto}}
.g-hero .k{display:inline-block;color:var(--accent);border:1px solid var(--accent);font-size:12px;font-weight:700;padding:2px 10px;letter-spacing:.08em;margin-bottom:12px}
.g-hero h1{font-size:34px;line-height:1.35;margin:0 0 12px}
@media (max-width:480px){.g-hero h1{font-size:28px}}
.g-hero h1 .z{color:var(--accent)}
.g-hero .lead{color:var(--sub);font-size:15px;margin:0 0 18px}
.g-hero .cv img{width:100%;height:auto;border:1px solid var(--line);box-shadow:none;display:block}
.g-form{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px}
.g-form form{display:flex;flex-direction:column;gap:10px}
.g-form input[type=email]{width:100%;font-size:17px;padding:15px 16px;border:1px solid #b9c0c7;border-radius:8px;background:#fff}
.g-form .btn{width:100%;padding:15px 20px;font-size:17px}
.g-form .note{margin-top:10px}
.g-list{list-style:none;padding:0;margin:0}
.g-list li{position:relative;padding:8px 0 8px 26px;border-bottom:1px dashed var(--line)}
.g-list li:before{content:"";position:absolute;left:2px;top:16px;width:12px;height:12px;border:2px solid var(--accent)}
.g-ch{display:grid;gap:10px}
.g-ch div{display:grid;grid-template-columns:64px 1fr;gap:10px;border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fff}
.g-ch b{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;color:var(--accent)}
.g-ch span strong{display:block;font-size:16px}
.g-ch span small{color:var(--sub);font-size:13px}
.g-pages{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.g-pages img{width:100%;height:auto;border:1px solid var(--line);display:block}
.g-three{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);margin:6px 0 0}
.g-three div{text-align:center;padding:14px 4px;border-right:1px solid var(--line);font-size:13px;color:var(--sub)}
.g-three div:last-child{border-right:0}
.g-three b{display:block;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:18px;color:var(--ink)}
@media (max-width:480px){.g-three b{font-size:15px}.g-three div{font-size:11px}}
.g-manga{display:grid;grid-template-columns:150px 1fr;gap:18px;align-items:center}
@media (max-width:480px){.g-manga{grid-template-columns:110px 1fr;gap:12px}}
.g-manga img{width:100%;height:auto;border:1px solid var(--line)}
.pdf-band{display:grid;grid-template-columns:130px 1fr;gap:20px;align-items:center;background:#fff;border:2px solid var(--accent);border-radius:12px;padding:20px;color:var(--ink)}
.pdf-band:hover{text-decoration:none;background:var(--accent-soft)}
.pdf-band img{width:100%;height:auto;border:1px solid var(--line);display:block;background:#fff}
.pdf-band .k{display:inline-block;background:var(--accent);color:#fff;font-size:12px;font-weight:700;letter-spacing:.08em;padding:2px 10px;border-radius:3px}
.pdf-band h3{margin:8px 0 8px;font-size:22px;color:var(--ink)}
.pdf-band p{margin:0 0 14px;font-size:15px;color:var(--ink);line-height:1.8}
@media (max-width:480px){.pdf-band{grid-template-columns:90px 1fr;gap:12px}.pdf-band h3{font-size:17px}}
@media (max-width:400px){nav.menu{gap:9px;font-size:11.5px}.brand{font-size:15px}.brand small{font-size:10px}}
.brand .os{font-size:.82em;font-weight:600;margin-left:.45em;letter-spacing:.02em}