@font-face{font-family:Pretendard;src:url('/fonts/PretendardVariable.woff2') format('woff2');font-weight:100 900;font-display:swap}
/* The shared header stays unchanged; the light page supplies its surface. */
.hd.hd-b,.hd.hd-b .hd-nav{background:var(--bg,#fff)}
:root{--blue:#2563eb;--blue-d:#1e4cba;--blue-l:#f4f7fd;--ink:#1c2331;--body:#3a414d;--mute:#5f6672;--line:#e4e7ec;--paper:#e9edf2;--bg:#fff;--text:var(--ink);--text-2:var(--body);--muted:var(--mute);--primary:var(--blue);--primary-bright:var(--blue-d);--accent-text:var(--blue);--panel-2:#f7f8fa;--border:var(--line);--hairline:var(--line);--brass-line:var(--line);--brass-soft:var(--line);--maxw:1120px;font-family:Pretendard,system-ui,sans-serif;color:var(--ink);background:#fff;font-synthesis:none}*{box-sizing:border-box}body{margin:0;line-height:1.68;word-break:keep-all;overflow-wrap:anywhere}a{color:inherit}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}:focus-visible{outline:3px solid #2563eb;outline-offset:4px}.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:white;padding:12px}.skip-link:focus{top:12px}.store-shell{max-width:1120px;margin:0 auto;padding-left:32px;padding-right:32px}.store-hero{padding-top:76px;padding-bottom:56px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1.5fr 1fr;gap:64px;align-items:end}.store-hero h1{font-size:clamp(36px,4.5vw,60px);line-height:1.23;letter-spacing:-.055em;margin:0;font-weight:780}.store-hero h1 em{font-style:normal;color:var(--blue)}.store-hero p{font-size:17px;color:var(--mute);margin:0 0 6px;max-width:350px}.catalog-section{padding-top:46px;padding-bottom:72px}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:30px}.section-head h2{font-size:24px;margin:0;letter-spacing:-.03em}.count{font-size:14px;color:var(--mute)}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:44px 34px}.book-card{text-decoration:none;display:block}.cover-stage{padding:24px 34px 28px;background:#f3f5f8;border-bottom:1px solid var(--line);margin-bottom:20px}.book-cover{aspect-ratio:0.7;background:white;border:1px solid #dde3ec;border-left:6px solid #1e4cba;box-shadow:8px 10px 18px -10px #24304e66,inset 3px 0 7px #dae2ef;position:relative;padding:26px 20px 18px;display:flex;flex-direction:column;overflow:hidden;min-width:0;transition:transform .18s}.book-card:hover .book-cover{transform:translateY(-4px)}.cover-bar{width:34px;height:4px;background:var(--blue);margin-bottom:26px}.cover-title{font-size:clamp(21px,2.3vw,30px);font-weight:780;line-height:1.36;letter-spacing:-.06em;display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden}.cover-subtitle{font-size:11px;line-height:1.6;color:var(--mute);margin-top:12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.cover-author{font-size:11px;margin-top:auto;padding-top:25px;border-bottom:1px solid #dae4f6;padding-bottom:12px}.cover-publisher{font-size:9px;margin-top:10px;color:var(--blue);letter-spacing:.08em}.book-card h3{font-size:21px;line-height:1.45;margin:0 0 8px;letter-spacing:-.04em}.book-card p{font-size:14px;color:var(--mute);margin:0}.book-meta{display:flex;justify-content:space-between;gap:8px;margin-top:16px;font-size:13px}.book-meta strong{font-size:16px}.empty-shelf{border:1px solid var(--line);background:linear-gradient(110deg,#f4f7fd,#fff);min-height:240px;padding:46px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.empty-shelf h3{font-size:26px;margin:0 0 8px;letter-spacing:-.04em}.empty-shelf p{color:var(--mute);margin:0 0 24px;max-width:580px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;border:1px solid var(--line);padding:10px 20px;border-radius:5px;background:#fff;text-decoration:none;font-weight:650;font-size:14px;line-height:1.5}.btn.primary{color:#fff;background:var(--blue);border-color:var(--blue)}.reading-guide{padding-top:64px;padding-bottom:64px;display:grid;grid-template-columns:1fr 1fr;gap:84px;border-top:1px solid var(--line)}.reading-guide h2{font-size:30px;letter-spacing:-.04em;line-height:1.5;margin:0 0 18px}.reading-guide p{font-size:15px;color:var(--mute);margin:0}.reading-guide ol{list-style:none;margin:0;padding:0}.reading-guide li{display:flex;gap:20px;padding:0 0 25px}.reading-guide li>span{font-variant-numeric:tabular-nums;color:var(--blue);font-size:13px;padding-top:3px}.reading-guide li strong{display:block;margin-bottom:5px}.redeem-panel{padding-top:36px;padding-bottom:36px;background:var(--blue-l);display:grid;grid-template-columns:1fr 1fr;gap:40px;border:1px solid #dae4f6;border-radius:8px}.redeem-panel h2{font-size:23px;letter-spacing:-.04em;margin:0 0 5px}.redeem-panel p{font-size:14px;color:var(--mute);margin:4px 0 0}.redeem-panel label{font-size:13px;font-weight:650;display:block;margin-bottom:6px}.form-row{display:flex;gap:8px}.form-row input{width:100%;min-width:0;min-height:46px;border:1px solid #ccd6e6;padding:10px 12px;border-radius:5px;background:white}.form-row button{flex-shrink:0}.site-footer{margin-top:60px;padding-top:26px;padding-bottom:34px;border-top:1px solid var(--line);display:flex;gap:28px;align-items:center;font-size:13px}.site-footer p{margin:0;color:var(--mute)}.site-footer>a{margin-left:auto;color:var(--mute)}.product-top{padding-top:36px;padding-bottom:64px}.breadcrumb{font-size:13px;color:var(--mute);margin:0 0 30px}.product-grid{display:grid;grid-template-columns:340px 1fr;gap:68px;align-items:start}.product-grid .cover-stage{padding:34px 46px;margin:0}.product-grid .cover-title{font-size:30px}.product-detail{padding-top:6px}.product-detail h1{font-size:38px;line-height:1.35;letter-spacing:-.05em;margin:0 0 12px}.product-subtitle{font-size:18px;color:var(--mute)}.product-byline{font-size:14px;color:var(--mute);padding-bottom:20px;border-bottom:1px solid var(--line)}.product-description{white-space:pre-wrap;font-size:16px;margin:24px 0}.product-price{font-size:25px;font-weight:750;margin:26px 0 18px}.product-actions{display:flex;gap:9px;flex-wrap:wrap}.payment-note{font-size:13px;color:var(--mute);margin-top:12px}.product-toc{max-width:780px;margin:0 auto;padding:44px 32px 60px;border-top:1px solid var(--line)}.product-toc h2{font-size:26px;margin:0 0 22px}.product-toc ol{list-style:none;padding:0}.product-toc li{display:flex;align-items:center;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}.chapter-number{font-size:13px;color:var(--blue);min-width:24px;font-variant-numeric:tabular-nums}.chapter-access{font-size:12px;color:var(--mute);margin-left:auto;flex-shrink:0}.error-panel{padding-top:70px;padding-bottom:70px}.loading{padding-top:70px;padding-bottom:70px;color:var(--mute)}
@media(max-width:760px){.store-shell{padding-left:22px;padding-right:22px}.store-hero{grid-template-columns:1fr;gap:24px;padding-top:42px;padding-bottom:35px}.store-hero h1{font-size:40px}.store-hero p{max-width:100%;font-size:15px}.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 18px}.cover-stage{padding:18px 14px 20px}.book-cover{padding:15px 12px 12px;border-left-width:4px}.cover-bar{margin-bottom:14px;width:25px;height:3px}.cover-title{font-size:20px}.cover-subtitle{font-size:10px}.cover-author{font-size:9px;padding-top:15px;padding-bottom:7px}.cover-publisher{font-size:8px}.book-card h3{font-size:18px}.book-card p{font-size:12px}.book-meta{flex-direction:column;margin-top:8px;gap:0}.reading-guide{grid-template-columns:1fr;gap:32px;padding-top:40px;padding-bottom:24px}.redeem-panel{grid-template-columns:1fr;gap:22px;border-radius:0}.empty-shelf{padding:28px}.empty-shelf h3{font-size:23px}.site-footer{flex-wrap:wrap;gap:10px 20px}.site-footer>a{margin-left:0}.product-grid{grid-template-columns:1fr;gap:30px}.product-grid>.cover-stage{width:270px;max-width:100%;margin:auto}.product-detail h1{font-size:30px}.product-subtitle{font-size:16px}.product-toc{padding-left:22px;padding-right:22px}.product-top{padding-bottom:34px}.product-actions .btn{flex:1}.product-toc li{gap:12px;align-items:flex-start}.chapter-access{font-size:11px}.form-row{flex-wrap:wrap}.form-row input{flex:1;min-width:160px}.form-row button{flex:1}.reading-guide h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}