:root{--ink:#142030;--muted:#637080;--blue:#3155ef;--border:#dfe4eb}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;color:var(--ink);background:#fff;font-family:'Apple SD Gothic Neo','Malgun Gothic',sans-serif;word-break:keep-all}a{color:inherit;text-decoration:none}button{font:inherit}a:focus-visible,summary:focus-visible{outline:3px solid #829aff;outline-offset:6px}.header{height:94px;max-width:1440px;margin:auto;padding:0 6%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:25px;letter-spacing:-1px}.brand-icon{display:grid;place-items:center;width:34px;height:34px;background:var(--blue);color:white;border-radius:8px;font-family:Arial;font-size:25px}.brand-caption{font-weight:400;letter-spacing:0;color:var(--muted);font-size:12px;margin-left:12px}nav{display:flex;align-items:center;gap:32px;font-size:14px}nav a:hover,.text-link:hover{color:var(--blue)}.nav-cta{background:var(--ink);color:#fff;padding:13px 21px;border-radius:5px}.hero{max-width:1440px;margin:auto;padding:68px 6% 62px;display:grid;grid-template-columns:1.06fr 1fr;gap:7%}.eyebrow{font-size:14px;letter-spacing:0;font-weight:500;color:var(--muted);margin:0 0 25px;display:flex;align-items:center;gap:12px}.line{height:2px;width:24px;background:var(--blue)}.edition{font-size:15px;font-weight:600;margin:40px 0 20px}h1{font-size:clamp(44px,4.8vw,68px);letter-spacing:-3px;line-height:1.22;margin:0 0 24px;font-weight:800}h1 em{color:var(--blue);font-style:normal}.intro{font-size:17px;line-height:1.9;color:var(--muted);margin:0}.hero-actions{display:flex;align-items:center;gap:24px;margin:32px 0 27px}.button{display:inline-flex;padding:18px 27px;border-radius:5px;font-size:15px;font-weight:700}.primary{background:var(--blue);color:white;box-shadow:0 7px 20px #3155ef22}.primary:hover{background:#2143d6}.text-link{font-size:14px;border-bottom:1px solid #9aa1ae;padding:5px 0}.hero-note{font-size:12px;color:#4a596b;line-height:1.8}.hero-note span{display:block;color:#828a94}.hero-visual{padding-top:5px}.image-wrap{height:100%;min-height:570px;position:relative;overflow:hidden;background:#243b53;border-radius:3px}.image-wrap img{width:100%;height:100%;position:absolute;object-fit:cover}.visual-shade{position:absolute;inset:0;background:linear-gradient(180deg,#0c1f3750 0%,transparent 48%,#0c1f37b0)}.visual-heading{position:absolute;top:30px;left:30px;font-family:Arial;font-weight:800;font-size:33px;line-height:1.07;letter-spacing:-1px;color:#fff}.visual-bottom{position:absolute;bottom:27px;left:30px;right:30px;display:flex;justify-content:space-between;gap:20px;align-items:center;color:white;font-size:14px}.visual-bottom span:last-child{font-size:10px;letter-spacing:1px}.principles{padding:28px 6%;background:#f3f5f8;display:flex;gap:35px;align-items:center;justify-content:center;font-size:14px}.principles>span{color:var(--muted);margin-right:auto}.principles b{font-size:12px;color:var(--blue);margin-right:9px}.section{max-width:1440px;padding:88px 6%;margin:auto}h2{font-size:clamp(29px,3vw,42px);line-height:1.4;letter-spacing:-1.6px;margin:0}p{line-height:1.8}.inside{display:grid;grid-template-columns:1fr 1fr;gap:8%;border-bottom:1px solid var(--border)}.inside-copy{padding-top:29px;color:var(--muted);font-size:16px}.inside-copy p:first-child{margin-top:0}.section-top{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:35px}.small{font-size:13px;color:var(--muted)}.chapters{border-top:2px solid var(--ink)}details{border-bottom:1px solid var(--border)}summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:32px;padding:26px 0;font-size:20px;font-weight:600}summary::-webkit-details-marker{display:none}.chapter-no{font-size:14px;color:var(--blue);font-weight:500}.plus{margin-left:auto;font-size:25px;font-weight:300}.chapters details[open] .plus{transform:rotate(45deg)}.chapter-body{padding:0 50px 24px;color:var(--muted);font-size:16px;display:grid;grid-template-columns:1fr 1fr;gap:30px}.chapter-body p{margin:0}.chapter-body ul{margin:0;padding-left:18px;line-height:2}.download{margin:0 auto;background:#16253b;color:white;padding:70px max(6%,calc((100vw - 1268px)/2));display:grid;grid-template-columns:1.2fr 1fr;gap:10%;align-items:center}.download .eyebrow{color:#9fafff}.download>div>p:last-child{color:#a6b2c5;font-size:16px}.download-card{padding:30px;background:#fff;color:var(--ink);border-radius:8px}.file-label{font-size:14px;letter-spacing:0;color:var(--muted);font-weight:500}h3{font-size:24px;margin:18px 0 12px}.download-card p{font-size:14px;color:var(--muted)}.download-card button{width:100%;border:0;border-radius:4px;background:#e9edf4;color:#657286;padding:17px;font-weight:bold;cursor:not-allowed}.download-note{display:block;text-align:center;margin-top:12px;font-size:12px;color:var(--muted)}.faq{max-width:1000px}.faq h2{font-size:30px;margin-bottom:30px}.faq summary{font-size:16px;font-weight:500}.faq summary span{margin-left:auto}.faq details p{font-size:15px;color:var(--muted);margin:0 0 24px}footer{border-top:1px solid var(--border);padding:33px 6%;display:flex;align-items:center;gap:24px}footer p{font-size:13px;color:var(--muted)}footer>span{margin-left:auto;font-size:11px;color:#7d8793}@media(min-width:1500px){.principles{padding-left:calc((100vw - 1268px)/2);padding-right:calc((100vw - 1268px)/2)}}@media(max-width:900px){.brand-caption{display:none}.hero{gap:5%;padding-top:42px}h1{font-size:46px}.hero-actions{align-items:start;flex-direction:column;gap:12px}.image-wrap{min-height:560px}.principles{gap:18px;flex-wrap:wrap}.principles>span{width:100%;text-align:center;margin:0}.visual-heading{font-size:26px;left:22px}.visual-bottom{left:22px;right:22px;flex-direction:column;align-items:start}.inside,.download{gap:5%}.chapter-body{grid-template-columns:1fr;gap:8px}}@media(max-width:620px){html{scroll-padding-top:25px}.header{height:76px;padding:0 6%}.brand{font-size:22px}nav{gap:15px}nav>a:first-child{display:none}.nav-cta{padding:11px 12px;font-size:13px}.hero{grid-template-columns:1fr;padding-top:32px;gap:35px}.hero-copy .eyebrow{margin-bottom:25px}.edition{margin-top:20px}h1{font-size:48px}.intro{font-size:16px}.hero-actions{flex-direction:row;align-items:center;gap:20px}.button{padding:17px 20px}.text-link{font-size:13px}.image-wrap{min-height:370px}.image-wrap img{object-position:center 45%}.visual-heading{font-size:31px}.visual-bottom{flex-direction:row}.principles{gap:15px;font-size:12px;padding-top:23px;padding-bottom:23px}.principles>span{font-size:14px}.principles b{margin-right:4px}.section{padding-top:60px;padding-bottom:60px}.inside{grid-template-columns:1fr;gap:20px}.inside-copy{padding:0}.section-top{align-items:start;flex-direction:column;gap:16px}h2{font-size:30px}.eyebrow{margin-bottom:18px}summary{font-size:17px;gap:20px;padding:23px 0}.chapter-body{padding-left:35px;font-size:15px}.download{grid-template-columns:1fr;gap:28px;padding:50px 6%}.download-card{padding:27px}.faq h2{font-size:26px}footer{flex-wrap:wrap;gap:15px}footer p{width:100%;order:2;margin:0}footer>span{font-size:10px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.cover-stage{height:100%;min-height:570px;background:#f0f3f9;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px;gap:22px;border-radius:5px}.cover-tag{font-size:14px;letter-spacing:0;color:#536178}.main-cover{display:block;width:72%;height:auto;max-height:460px;object-fit:contain;box-shadow:12px 18px 32px #0c19333b}.cover-caption{font-size:12px;color:#627086}@media(max-width:620px){.cover-stage{min-height:440px}.main-cover{max-height:370px;width:auto;max-width:90%}}
.book-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:0 0 50px}.book-card{background:#f3f5f9;border:1px solid #e8ecf2;border-radius:7px;padding:30px;display:grid;grid-template-columns:135px 1fr;gap:25px;align-items:start}.book-card img{width:100%;height:auto;box-shadow:5px 8px 13px #0d183322}.book-kicker{font-size:12px;color:var(--blue);font-weight:bold}.book-card h3{font-size:21px;line-height:1.4;margin:12px 0}.book-card p{font-size:14px;color:var(--muted);margin:0 0 15px}.chapters .chapter-no{min-width:75px;font-size:12px}.download-link{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:24px 0;border-bottom:1px solid var(--border);font-size:16px;font-weight:bold}.download-link small{display:block;margin-top:9px;font-size:12px;font-weight:400;color:var(--muted)}.download-pill{font-size:12px;padding:11px 13px;background:var(--blue);color:white;border-radius:4px;white-space:nowrap}.download-link:hover .download-pill{background:#1839c4}.download .archive-note{font-size:13px!important;max-width:470px;color:#abb7cc!important;margin-top:24px;line-height:1.8}@media(max-width:1050px){.book-card{grid-template-columns:95px 1fr;padding:22px;gap:20px}.book-card h3{font-size:18px}}@media(max-width:750px){.book-grid{grid-template-columns:1fr}.book-card{grid-template-columns:115px 1fr}.chapters summary{gap:10px}.chapters .chapter-no{min-width:66px;font-size:11px}.chapters .chapter-body{padding-left:0}}@media(max-width:360px){.book-card{grid-template-columns:80px 1fr;padding:16px;gap:14px}.download-link{font-size:14px}}
.reader-entry{display:block;margin-top:22px;padding:15px;border:1px solid #bcc9ec;border-radius:5px;color:#2445b2;background:#f3f6ff;font-size:15px;font-weight:600;text-align:center}.reader-entry:hover{background:#e9efff}
