.curriculum-editorial *{box-sizing:border-box}
.curriculum-editorial{margin:0;background:#fff;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.7}
.curriculum-editorial a{color:inherit;text-decoration:none}
.curriculum-editorial button{font:inherit;cursor:pointer}
.curriculum-editorial a:focus-visible,.curriculum-editorial button:focus-visible{outline:3px solid var(--blue);outline-offset:5px}
.curriculum-editorial{overflow:hidden}
.curriculum-editorial .wrap{max-width:1240px;margin:0 auto;padding:0 40px}
.curriculum-editorial .hero{padding-top:66px;position:relative}
.curriculum-editorial .eyebrow{margin:0 0 20px;color:var(--blue);font-size:14px;letter-spacing:.16em}
.curriculum-editorial h1{font-family:"Songti SC","SimSun",serif;font-size:clamp(40px,5vw,70px);font-weight:600;letter-spacing:-.045em;line-height:1.2;margin:0;max-width:850px}
.curriculum-editorial h1 span{display:block}
.curriculum-editorial .hero-top{display:flex;justify-content:space-between;align-items:flex-end;gap:40px}
.curriculum-editorial .hero-intro{max-width:290px;color:var(--muted);margin:0 0 8px;font-size:16px}
.curriculum-editorial .book-stage{margin-top:26px;display:grid;grid-template-columns:1fr 1fr 1fr;align-items:end;gap:60px;padding:32px 60px 20px;position:relative}
.curriculum-editorial .book-stage:after{content:"";height:1px;background:var(--line);position:absolute;left:0;right:0;bottom:0}
.curriculum-editorial .book-column{text-align:center;position:relative}
.curriculum-editorial .book{position:relative;width:180px;height:232px;margin:0 auto 30px;transform:rotate(-6deg) skewY(2deg);background:var(--blue);box-shadow:12px 12px 0 #e6ebf3,14px 13px 0 #c5cddd,18px 17px 24px #122b5720;color:white;display:flex;flex-direction:column;text-align:left;padding:23px 19px 19px 27px;transition:transform .25s,opacity .25s}
.curriculum-editorial .book:before{content:"";position:absolute;left:7px;top:0;bottom:0;border-left:1px solid #ffffff6b;border-right:1px solid #003baf;width:5px}
.curriculum-editorial .book small{font-size:12px;letter-spacing:.08em;opacity:1}
.curriculum-editorial .book strong{font-family:"Songti SC","SimSun",serif;font-size:27px;font-weight:500;line-height:1.3;margin-top:30px}
.curriculum-editorial .book .draw{margin-top:auto;height:44px;display:flex;align-items:center;justify-content:center;gap:9px}
.curriculum-editorial .draw i{width:29px;height:29px;border:1px solid currentColor;display:block}
.curriculum-editorial .draw i:nth-child(2){border-radius:50%}
.curriculum-editorial .draw i:nth-child(3){transform:rotate(45deg);width:20px;height:20px}
.curriculum-editorial .book.work{height:205px;background:#fff;color:var(--blue);border:1px solid var(--blue);transform:rotate(4deg) skewY(-2deg)}
.curriculum-editorial .book.work:before{border-color:var(--line)}
.curriculum-editorial .book.work .draw{background:repeating-linear-gradient(0deg,transparent 0 8px,#0056ec38 9px 10px)}
.curriculum-editorial .book.supp{height:175px;background:#d9e8ff;color:var(--blue);transform:rotate(-3deg);width:165px}
.curriculum-editorial .book.supp:before{border-color:#7aabff}
.curriculum-editorial .book.supp strong{margin-top:15px}
.curriculum-editorial .book-column.is-active .book{transform:translateY(-10px) rotate(0deg)}
.curriculum-editorial .role-tab{border:0;border-bottom:3px solid transparent;background:white;min-height:48px;min-width:110px;font-weight:600;color:var(--muted);padding:8px 16px}
.curriculum-editorial .role-tab[aria-selected="true"]{color:var(--blue);border-bottom-color:var(--blue)}
.curriculum-editorial .book-note{display:grid;grid-template-columns:1fr 2fr;gap:45px;padding:26px 0 48px;align-items:start}
.curriculum-editorial .book-note h2{font-size:20px;line-height:1.5;margin:0}
.curriculum-editorial .book-note p{margin:0;color:var(--muted);max-width:660px}
.curriculum-editorial .figure-note{font-size:12px;letter-spacing:.02em;color:var(--muted)}
.curriculum-editorial .chapter{border-top:1px solid var(--ink);padding:56px 0 64px}
.curriculum-editorial .chapter-head{display:grid;grid-template-columns:1fr 2fr;gap:45px;margin-bottom:40px;align-items:start}
.curriculum-editorial .chapter h2{font-family:"Songti SC","SimSun",serif;font-size:38px;font-weight:600;letter-spacing:-.03em;line-height:1.3;margin:0}
.curriculum-editorial .chapter-head p{margin:2px 0 0;color:var(--muted);max-width:650px}
.curriculum-editorial .systems{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.curriculum-editorial .system{position:relative;padding-top:18px;border-top:3px solid var(--blue)}
.curriculum-editorial .system h3{font-size:21px;margin:0 0 18px;font-weight:600;line-height:1.4}
.curriculum-editorial .system .system-mark{font-family:Georgia,serif;color:var(--blue);font-size:44px;line-height:1.1;margin-bottom:20px;display:block}
.curriculum-editorial .system p{font-size:14px;color:var(--muted);margin:0}
.curriculum-editorial .system strong{font-size:14px;display:block;margin:12px 0 6px;font-weight:600;color:var(--ink)}
.curriculum-editorial .relationship{margin-top:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:25px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.curriculum-editorial .relationship span{font-size:18px;font-weight:600;white-space:nowrap}
.curriculum-editorial .relationship i{height:1px;background:var(--blue);flex:1;position:relative;max-width:90px}
.curriculum-editorial .relationship i:after{content:"";width:6px;height:6px;position:absolute;right:0;top:-3px;transform:rotate(45deg);border-top:1px solid var(--blue);border-right:1px solid var(--blue)}
.curriculum-editorial .relationship .last{color:var(--blue)}
.curriculum-editorial .language-strip{display:flex;gap:40px;justify-content:space-between;align-items:center;margin-top:24px}
.curriculum-editorial .language-strip p{color:var(--muted);font-size:14px;max-width:700px;margin:0}
.curriculum-editorial .language-strip b{white-space:nowrap;font-size:14px}
.curriculum-editorial .versions{background:var(--blue);color:#fff;padding:60px 0 64px}
.curriculum-editorial .versions .chapter-head{margin-bottom:32px}
.curriculum-editorial .versions h2{font-family:"Songti SC","SimSun",serif;font-size:38px;line-height:1.3;margin:0}
.curriculum-editorial .versions .chapter-head p{color:#e2edff}
.curriculum-editorial .version-controls{display:flex;gap:8px;margin-bottom:30px}
.curriculum-editorial .version-controls button{border:1px solid #8ab4fc;color:white;background:transparent;padding:10px 22px;min-height:46px}
.curriculum-editorial .version-controls button[aria-pressed="true"]{background:#fff;color:var(--blue);border-color:#fff}
.curriculum-editorial .version-controls button:focus-visible{outline-color:white}
.curriculum-editorial .timeline{display:grid;grid-template-columns:1fr 60px 1fr;gap:20px;align-items:center}
.curriculum-editorial .edition{padding:24px 0 20px;border-top:1px solid #99bdff;border-bottom:1px solid #99bdff}
.curriculum-editorial .edition-head{display:flex;justify-content:space-between;align-items:center;gap:14px}
.curriculum-editorial .edition-head h3{margin:0;font-size:23px;font-weight:500}
.curriculum-editorial .edition-status{font-size:12px;padding:3px 9px;border:1px solid #99bdff;white-space:nowrap}
.curriculum-editorial .edition p{font-size:14px;line-height:1.8;color:#e2edff;margin:16px 0 0}
.curriculum-editorial .spines{display:flex;gap:6px;margin-top:24px;align-items:flex-end;height:60px}
.curriculum-editorial .spines i{display:block;width:28px;height:60px;border:1px solid #b6d0ff;transform:skewY(-8deg)}
.curriculum-editorial .spines i:nth-child(2){height:50px;background:#ffffff28}
.curriculum-editorial .spines i:nth-child(3){height:40px;background:#ffffff60}
.curriculum-editorial .timeline-join{text-align:center;font-size:28px;color:#b6d0ff}
.curriculum-editorial .version-caption{margin:26px 0 0;color:#e2edff;max-width:820px;min-height:54px}
@media(max-width:800px){.curriculum-editorial .wrap{padding:0 24px}
.curriculum-editorial .hero{padding-top:40px}
.curriculum-editorial .hero-top{display:block}
.curriculum-editorial h1{font-size:48px}
.curriculum-editorial .hero-intro{max-width:500px;margin:24px 0 0}
.curriculum-editorial .book-stage{gap:20px;padding:42px 15px 12px}
.curriculum-editorial .book{width:140px;height:190px;padding:20px}
.curriculum-editorial .book.work{height:170px}
.curriculum-editorial .book.supp{width:130px;height:145px}
.curriculum-editorial .book strong{font-size:22px;margin-top:22px}
.curriculum-editorial .book small{font-size:12px}
.curriculum-editorial .book .draw{height:32px}
.curriculum-editorial .draw i{width:20px;height:20px}
.curriculum-editorial .draw i:nth-child(3){width:15px;height:15px}
.curriculum-editorial .book-note,.curriculum-editorial .chapter-head{grid-template-columns:1fr;gap:18px}
.curriculum-editorial .systems{grid-template-columns:1fr 1fr;gap:36px}
.curriculum-editorial .relationship span{font-size:15px}
.curriculum-editorial .language-strip{display:block}
.curriculum-editorial .language-strip b{display:block;margin-bottom:8px}}
@media(max-width:480px){.curriculum-editorial .wrap{padding:0 22px}
.curriculum-editorial h1{font-size:39px;line-height:1.35;letter-spacing:-.055em}
.curriculum-editorial .hero{padding-top:34px}
.curriculum-editorial .eyebrow{font-size:12px;margin-bottom:14px}
.curriculum-editorial .hero-intro{font-size:16px;line-height:1.75;margin-top:20px}
.curriculum-editorial .book-stage{margin-top:22px;gap:10px;padding:28px 0 8px}
.curriculum-editorial .book{width:88px;height:138px;padding:14px 9px 10px 16px;margin-bottom:23px;box-shadow:5px 5px 0 #e6ebf3,7px 6px 0 #c5cddd,10px 10px 15px #122b5714}
.curriculum-editorial .book:before{left:3px;width:3px}
.curriculum-editorial .book.work{height:122px}
.curriculum-editorial .book.supp{width:83px;height:105px}
.curriculum-editorial .book small{font-size:12px;letter-spacing:0}
.curriculum-editorial .book strong{font-size:18px;margin-top:16px}
.curriculum-editorial .book.supp strong{margin-top:10px}
.curriculum-editorial .book .draw{height:22px;gap:4px}
.curriculum-editorial .draw i{width:15px;height:15px}
.curriculum-editorial .draw i:nth-child(3){width:10px;height:10px}
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.curriculum-editorial .book-note{padding:22px 0 36px;gap:10px}
.curriculum-editorial .book-note p{font-size:16px}
.curriculum-editorial .book-note h2{font-size:20px}
.curriculum-editorial .chapter{padding:34px 0 40px}
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.curriculum-editorial .chapter-head{margin-bottom:28px}
.curriculum-editorial .chapter-head p{font-size:16px}
.curriculum-editorial .systems{gap:30px 22px}
.curriculum-editorial .system h3{font-size:18px;margin-bottom:13px}
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.curriculum-editorial .relationship{gap:8px;flex-wrap:wrap;justify-content:flex-start;padding:20px 0;margin-top:30px}
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.curriculum-editorial .relationship .last{width:100%;padding-top:6px}
.curriculum-editorial .language-strip p,.curriculum-editorial .language-strip b{font-size:16px}
.curriculum-editorial .versions{padding:36px 0}
.curriculum-editorial .version-controls button{font-size:16px;padding:10px 18px}
.curriculum-editorial .timeline{grid-template-columns:1fr;gap:18px}
.curriculum-editorial .timeline-join{display:none}
.curriculum-editorial .edition{padding:20px 0}
.curriculum-editorial .edition p{font-size:16px}
.curriculum-editorial .edition-head h3{font-size:21px}
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.curriculum-editorial .spines i{height:42px;width:24px}
.curriculum-editorial .spines i:nth-child(2){height:35px}
.curriculum-editorial .spines i:nth-child(3){height:28px}
.curriculum-editorial .version-caption{font-size:16px}}
@media(prefers-reduced-motion:reduce){.curriculum-editorial .book{transition:none}}
.curriculum-editorial .book.work strong{font-size:24px}
@media(max-width:480px){.curriculum-editorial .book.work strong{font-size:18px}}
.curriculum-editorial .wrap{width:100%;max-width:1240px;padding-left:40px;padding-right:40px}
.curriculum-editorial h1 span{white-space:normal}
.curriculum-editorial .system p{font-size:15px;line-height:1.9}
.curriculum-editorial .systems{gap:30px}
.curriculum-editorial .system details{margin-top:20px;border-top:1px solid #cbd7e8}
.curriculum-editorial .system summary{min-height:48px;padding:12px 0;color:#0056ec;font-size:14px;cursor:pointer}
.curriculum-editorial .system dl{margin:0}
.curriculum-editorial .system dl>div{padding:14px 0;border-top:1px solid #e0e8f4}
.curriculum-editorial .system dt{font-size:12px;color:#0056ec;font-weight:600;margin-bottom:5px}
.curriculum-editorial .system dd{margin:0;font-size:14px;line-height:1.9;color:#52647a}
.curriculum-editorial .system h3{min-height:58px}
.curriculum-editorial .system .system-mark{font-family:Georgia,serif}
.curriculum-editorial .versions{background:#0056ec}
@media(max-width:800px){.curriculum-editorial .wrap{padding-left:24px;padding-right:24px}.curriculum-editorial .system h3{min-height:0}}
@media(max-width:480px){.curriculum-editorial .wrap{padding-left:22px;padding-right:22px}.curriculum-editorial .system p,.curriculum-editorial .system dd{font-size:16px}.curriculum-editorial .system summary{font-size:16px}.curriculum-editorial .system h3{font-size:20px}.curriculum-editorial .systems{grid-template-columns:1fr;gap:32px}.curriculum-editorial .system .system-mark{float:right;font-size:36px;margin:0 0 10px 16px}.curriculum-editorial .system h3{margin-bottom:14px}.curriculum-editorial .system{display:flow-root}}

.curriculum-editorial .hero{display:block;min-height:0;gap:0;padding-bottom:0}

@media(max-width:400px){.curriculum-editorial h1{font-size:36px}}@media(max-width:350px){.curriculum-editorial h1{font-size:31px}}

/* Longer language variants must fit the diagrams as well as the page. */
.curriculum-editorial .relationship{flex-wrap:wrap}
.curriculum-editorial .relationship span,.curriculum-editorial .language-strip b{white-space:normal;overflow-wrap:anywhere}
.curriculum-editorial .book-column{min-width:0}
.curriculum-editorial .edition-head{flex-wrap:wrap}
.curriculum-editorial .edition-status{white-space:normal}
html[lang=id] .curriculum-editorial .book strong,html[lang=en] .curriculum-editorial .book strong{font-family:Georgia,serif}
@media(max-width:480px){.curriculum-editorial .book-stage{grid-template-columns:repeat(3,minmax(0,1fr))}.curriculum-editorial .book,.curriculum-editorial .book.supp{max-width:100%}.curriculum-editorial .role-tab{overflow-wrap:anywhere;line-height:1.5}html[lang=id] .curriculum-editorial .book strong,html[lang=en] .curriculum-editorial .book strong{font-size:15px;overflow-wrap:anywhere;margin-top:12px}.curriculum-editorial .book.work strong{font-size:15px}}

/* Keep mobile cover content inside the books and role labels on one baseline. */
@media(max-width:800px){
 .curriculum-editorial .book-stage{align-items:stretch}
 .curriculum-editorial .book-column{display:flex;flex-direction:column;align-items:stretch}
 .curriculum-editorial .book,.curriculum-editorial .book.work,.curriculum-editorial .book.supp{height:204px;flex-shrink:0}
 .curriculum-editorial .book .draw{flex-shrink:0}
 .curriculum-editorial .role-tab{margin-top:auto;min-height:64px;display:flex;align-items:center;justify-content:center;line-height:1.4}
}
@media(max-width:480px){
 .curriculum-editorial .book-stage{gap:12px;padding:30px 4px 8px}
 .curriculum-editorial .book,.curriculum-editorial .book.work,.curriculum-editorial .book.supp{width:calc(100% - 8px);max-width:110px;height:178px;padding:14px 7px 12px 12px;margin-bottom:24px}
 .curriculum-editorial .book small{font-size:12px;line-height:1.4;letter-spacing:0}
 .curriculum-editorial .book strong,.curriculum-editorial .book.work strong,.curriculum-editorial .book.supp strong{font-size:18px;line-height:1.4;margin-top:14px}
 html[lang=id] .curriculum-editorial .book strong,html[lang=en] .curriculum-editorial .book strong{font-size:14px;line-height:1.5;margin-top:14px;overflow-wrap:normal;word-break:normal}
 .curriculum-editorial .role-tab{font-size:13px;padding:8px 2px;overflow-wrap:normal;word-break:normal}
}

/* Supporting introductions removed at the owner's request. */
.ai-intro{grid-template-columns:1fr}.gallery-heading{display:block}.curriculum-editorial .hero-top{display:block}.curriculum-editorial .chapter-head{grid-template-columns:1fr}.curriculum-editorial .book-stage{margin-bottom:32px}

/* Supporting introductions removed at the owner's request. */
.ai-intro{grid-template-columns:1fr}.gallery-heading{display:block}.curriculum-editorial .hero-top{display:block}.curriculum-editorial .chapter-head{grid-template-columns:1fr}.curriculum-editorial .book-stage{margin-bottom:32px}


/* The book-stage rule already separates this introduction; avoid a second divider. */
.curriculum-editorial .chapter{border-top:0;padding:40px 0 48px}
@media(max-width:800px){.curriculum-editorial .chapter{padding:28px 0 32px}.curriculum-editorial .book-stage{margin-bottom:16px}}