.cn-book{color:var(--ink);font-family:var(--sans);line-height:1.65;background:var(--cream);-webkit-font-smoothing:antialiased}
.cn-book *,.cn-book *::before,.cn-book *::after{box-sizing:border-box}

.cn-book{--cream:#f5f1eb;--paper:#fbf8f3;--line:#ddd5c7;--forest:#2C3E2F;--deep:#1f2d22;--sage:#71866b;--sage2:#8B9D83;--ink:#34423a;--gold:#a8823a;--goldsoft:#e9dcc0;
--head:'Montserrat',ui-sans-serif,system-ui,sans-serif;--serif:Georgia,'Iowan Old Style','Palatino Linotype',serif;--sans:'Inter',ui-sans-serif,system-ui,sans-serif}
.cn-book a{color:var(--forest)}
.cn-book :focus-visible{outline:2px solid var(--forest);outline-offset:3px}
.cn-book img{max-width:100%;height:auto;display:block}
.cn-book .wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.cn-book h1,.cn-book h2,.cn-book h3{font-family:var(--head);color:var(--forest);letter-spacing:-.015em;margin:0}
.cn-book .eyebrow{font-family:var(--head);font-size:.74rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--sage)}
.cn-book .eyebrow::before{content:"";display:inline-block;width:28px;height:1px;background:var(--gold);vertical-align:middle;margin-right:12px}
.cn-book .btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.8rem 1.6rem;border-radius:999px;font-weight:600;font-size:.95rem;text-decoration:none;border:1.5px solid transparent;transition:transform .2s,background-color .2s,color .2s}
.cn-book .btn:active{transform:scale(.98)}
.cn-book .btn-primary{background:var(--forest);color:var(--cream)}
.cn-book .btn-primary:hover{background:var(--deep)}
.cn-book .btn-ghost{border-color:var(--forest);color:var(--forest)}
.cn-book .btn-ghost:hover{background:var(--forest);color:var(--cream)}
.cn-book .ext::after{content:"\2197";font-size:.85em;opacity:.7}




.cn-book .hero{padding:72px 0 88px;overflow:hidden}
.cn-book .hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.cn-book .hero h1{font-size:clamp(2.4rem,5.2vw,4.1rem);line-height:1.04;font-weight:700;margin:18px 0 14px}
.cn-book .hero .sub{font-family:var(--serif);font-style:italic;font-size:clamp(1.2rem,2vw,1.5rem);color:var(--forest);margin:0 0 18px}
.cn-book .hero .lede{max-width:34em;font-size:1.05rem;margin:0 0 14px}
.cn-book .byline{font-size:.95rem;margin:0 0 30px}
.cn-book .byline a{font-weight:600}
.cn-book .actions{display:flex;flex-wrap:wrap;gap:12px}
.cn-book .stage{position:relative;display:grid;place-items:center;min-height:520px}
.cn-book .stage::before{content:"";position:absolute;width:min(520px,100%);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,#e8dfcc 0%,#e9e3d6 45%,transparent 70%)}
.cn-book .stage::after{content:"";position:absolute;width:min(470px,92%);aspect-ratio:1;border-radius:50%;border:1px solid rgba(168,130,58,.35);box-shadow:0 0 0 28px rgba(168,130,58,.04)}
.cn-book .stage img{position:relative;z-index:1;width:min(420px,88%);filter:drop-shadow(0 34px 40px rgba(31,45,34,.28)) drop-shadow(0 6px 10px rgba(31,45,34,.15))}
.cn-book .stage .tag{position:absolute;z-index:2;right:2%;bottom:12%;background:var(--forest);color:var(--cream);font-family:var(--head);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;padding:10px 14px;border-radius:4px}
.cn-book .stage .tag b{display:block;font-size:1.4rem;letter-spacing:0}


.cn-book .thesis{background:var(--forest);color:#e7e3d6;padding:96px 0}
.cn-book .thesis .wrap{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cn-book .thesis h2{color:var(--cream);font-family:var(--serif);font-weight:400;font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.15}
.cn-book .thesis h2 em{color:var(--goldsoft)}
.cn-book .thesis p{font-size:1.08rem;margin:0}
.cn-book .thesis p em{color:var(--cream)}

.cn-book section.block{padding:96px 0}
.cn-book .head-row{max-width:720px;margin-bottom:48px}
.cn-book .head-row h2{font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.12;margin-top:14px}
.cn-book .head-row p{margin:14px 0 0}


.cn-book .pair{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper)}
.cn-book .pair > div{padding:40px}
.cn-book .pair > div + div{border-left:1px solid var(--line);background:#efeadf}
.cn-book .pair h3{font-size:1.3rem;margin-bottom:10px}
.cn-book .pair .k{font-family:var(--head);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);font-weight:700}
.cn-book .note{font-size:.9rem;margin-top:16px;color:#5b6a5e}


.cn-book .forces{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cn-book .force-list{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:0;border-top:2px solid var(--forest)}
.cn-book .force{padding:34px 30px 34px 0}
.cn-book .force + .force{padding-left:30px;border-left:1px solid var(--line)}
.cn-book .force .n{font-family:var(--serif);font-size:3.2rem;line-height:1;color:var(--gold)}
.cn-book .force h3{font-size:1.35rem;margin:14px 0 4px}
.cn-book .force .what{font-family:var(--serif);font-style:italic;color:var(--sage);margin:0 0 12px}
.cn-book .force p{margin:0}
.cn-book .fine{font-size:.88rem;color:#5b6a5e;margin-top:28px;font-style:italic}


.cn-book .layers{display:grid;gap:12px}
.cn-book .layers details{background:var(--paper);border:1px solid var(--line);border-radius:12px;transition:background-color .2s}
.cn-book .layers details[open]{background:#fffdf8;border-color:#cbbf9f}
.cn-book .layers summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:56px 160px 1fr 28px;align-items:center;gap:12px;padding:22px 26px}
.cn-book .layers summary::-webkit-details-marker{display:none}
.cn-book .layers .idx{font-family:var(--serif);font-size:1.6rem;color:var(--gold)}
.cn-book .layers .nm{font-family:var(--head);font-weight:700;font-size:1.2rem;color:var(--forest)}
.cn-book .layers .ds{font-family:var(--serif);font-style:italic;color:var(--ink)}
.cn-book .layers .pm{width:28px;height:28px;border-radius:50%;border:1px solid var(--forest);position:relative}
.cn-book .layers .pm::before,.cn-book .layers .pm::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:1.5px;background:var(--forest);transform:translate(-50%,-50%);transition:transform .2s}
.cn-book .layers .pm::after{transform:translate(-50%,-50%) rotate(90deg)}
.cn-book .layers details[open] .pm::after{transform:translate(-50%,-50%) rotate(0)}
.cn-book .layers ul{margin:0;padding:0 26px 26px 254px;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 28px}
.cn-book .layers li{padding-left:18px;position:relative}
.cn-book .layers li::before{content:"";position:absolute;left:0;top:.7em;width:7px;height:7px;border-radius:50%;background:var(--sage2)}


.cn-book .numbers{background:#e9e3d6;padding:88px 0}
.cn-book .num-grid{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid #c9bea8}
.cn-book .num-grid div{padding:28px 18px 0 0}
.cn-book .num-grid div + div{padding-left:18px;border-left:1px solid #c9bea8}
.cn-book .num-grid b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(2rem,3.6vw,3rem);color:var(--forest);line-height:1}
.cn-book .num-grid span{display:block;margin-top:10px;font-size:.88rem}


.cn-book .lead-quote{margin:0 0 56px;padding:0 0 48px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:80px 1fr;gap:20px}
.cn-book .lead-quote .mark{font-family:var(--serif);font-size:6rem;line-height:.8;color:var(--gold)}
.cn-book .lead-quote blockquote{margin:0;font-family:var(--serif);font-size:clamp(1.5rem,2.8vw,2.2rem);line-height:1.3;color:var(--forest)}
.cn-book .cite{display:block;margin-top:18px;font-size:.92rem;color:var(--ink)}
.cn-book .cite strong{color:var(--forest)}
.cn-book .quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:40px 56px}
.cn-book .quotes figure{margin:0;padding-left:22px;border-left:2px solid var(--sage2)}
.cn-book .quotes blockquote{margin:0;font-family:var(--serif);font-size:1.15rem;line-height:1.5;color:var(--forest)}
.cn-book .quotes figcaption{margin-top:12px;font-size:.88rem}
.cn-book .more{margin-top:44px}


.cn-book .editions{background:var(--paper);border-top:1px solid var(--line)}
.cn-book .ed-feature{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center;background:var(--forest);color:#e7e3d6;border-radius:16px;padding:36px 40px;margin-bottom:22px}
.cn-book .ed-feature img{width:220px;margin:0 auto;filter:drop-shadow(0 20px 26px rgba(0,0,0,.35))}
.cn-book .ed-feature h3{color:var(--cream);font-size:1.5rem}
.cn-book .ed-feature .price{font-family:var(--serif);font-size:2.4rem;color:var(--goldsoft);margin:6px 0 4px}
.cn-book .ed-feature .btn-primary{background:var(--cream);color:var(--forest)}
.cn-book .ed-feature .btn-primary:hover{background:#fff8ea}
.cn-book .ed-feature .btn-ghost{border-color:#cfd6c8;color:var(--cream)}
.cn-book .ed-feature .btn-ghost:hover{background:var(--cream);color:var(--forest)}
.cn-book .ed-list{border-top:1px solid var(--line)}
.cn-book .ed{display:grid;grid-template-columns:1fr 120px 240px;gap:24px;align-items:center;padding:26px 0;border-bottom:1px solid var(--line)}
.cn-book .ed h3{font-size:1.1rem}
.cn-book .ed .meta{font-size:.88rem;margin:4px 0 0;color:#5b6a5e}
.cn-book .ed .price{font-family:var(--serif);font-size:1.6rem;color:var(--forest)}
.cn-book .ed .btn{width:100%}
.cn-book .disclaimer{font-size:.85rem;color:#5b6a5e;margin-top:28px;max-width:60em}



@media (max-width:900px){
 .cn-book .hero .wrap,.cn-book .thesis .wrap,.cn-book .pair,.cn-book .ed-feature{grid-template-columns:1fr}
 .cn-book .stage{min-height:400px;order:-1}
 .cn-book .pair > div + div{border-left:0;border-top:1px solid var(--line)}
 .cn-book .force-list{grid-template-columns:1fr}
 .cn-book .force,.cn-book .force + .force{padding:28px 0;border-left:0;border-bottom:1px solid var(--line)}
 .cn-book .num-grid{grid-template-columns:repeat(3,1fr)}
 .cn-book .num-grid div:nth-child(4){border-left:0;padding-left:0}
 .cn-book .num-grid div{padding-bottom:24px}
 .cn-book .layers summary{grid-template-columns:40px 1fr 28px}
 .cn-book .layers .ds{grid-column:2;grid-row:2}
 .cn-book .layers .pm{grid-column:3;grid-row:1}
 .cn-book .layers ul{padding:0 22px 22px 74px;grid-template-columns:1fr}
 .cn-book .quotes{grid-template-columns:1fr}
 .cn-book .ed{grid-template-columns:1fr auto}
 .cn-book .ed .btn{grid-column:1/-1}
}
@media (max-width:560px){
 .cn-book .num-grid{grid-template-columns:repeat(2,1fr)}
 .cn-book .num-grid div:nth-child(odd){border-left:0;padding-left:0}
 .cn-book .num-grid div:nth-child(4){border-left:1px solid #c9bea8;padding-left:18px}
 .cn-book .lead-quote{grid-template-columns:1fr}.cn-book .lead-quote .mark{font-size:4rem}
 .cn-book .pair > div,.cn-book .ed-feature{padding:28px 22px}
 .cn-book section.block,.cn-book .thesis{padding:72px 0}
}
@media (prefers-reduced-motion:reduce){.cn-book .btn{transition:none}.cn-book .btn:active{transform:none}}