:root{--paper:#f9f9f6;--ink:#292b29;--muted:#70716a;--line:#dcded7;--accent:#643a3c;--serif:Georgia,'Songti SC','STSong',serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer;color:inherit}button:disabled{opacity:.55;cursor:wait}a,button,input{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:#dfd2c9}.icon{width:19px;height:19px;flex-shrink:0;vertical-align:middle}.header{max-width:1320px;margin:auto;height:110px;padding:0 48px;display:flex;align-items:center;gap:65px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:baseline;gap:19px}.brand-en{font:32px/1 var(--serif);letter-spacing:-1.5px}.brand-period{color:var(--accent)}.brand-cn{font-size:13px;letter-spacing:2px}.header 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var(--line);padding-top:32px;display:grid;grid-template-columns:1fr 2fr;gap:40px}.reading-note h2{font:23px/1.5 var(--serif);margin:0}.reading-note p{font-size:15px;line-height:1.95;color:var(--muted);margin:0;max-width:700px}footer{max-width:1320px;margin:auto;padding:40px 48px 25px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:25px 70px}footer h2{font-size:14px;font-weight:500;margin:0 0 14px}footer p{font-size:13px;line-height:1.9;color:var(--muted);margin:0}.footer-reading{justify-self:end;min-width:300px}.footer-reading>span{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);margin-top:14px}.footer-reading .icon{width:15px;height:15px}.footer-bottom{grid-column:1/-1;border-top:1px solid var(--line);margin-top:30px;padding-top:22px;display:flex;justify-content:space-between;font-size:12px;color:#85877f}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--ink);border:1px solid var(--ink);color:#fff;padding:15px 24px;min-height:50px;font-size:14px;border-radius:2px;transition:background .2s}.button:hover{background:#464b42}.detail{max-width:1320px;margin:auto;padding:0 48px}.back-link{display:inline-block;padding:27px 0;font-size:13px;color:var(--muted);text-decoration:underline;text-underline-offset:5px}.detail-hero{display:grid;grid-template-columns:1.12fr 1fr;gap:65px;margin:10px 0 80px;align-items:start}.gallery{position:relative;background:#ecece7;display:flex;flex-direction:column;min-width:0}.gallery-stage{height:480px;display:flex;align-items:center;justify-content:center;overflow:hidden}.gallery-stage>.book-photo{object-fit:cover}.gallery-controls{display:flex;gap:8px;align-items:center;background:var(--paper);padding:17px 0 0}.gallery-controls button{min-width:65px;min-height:44px;background:none;border:1px solid transparent;border-radius:2px;font-size:13px;color:var(--muted);padding:8px 13px}.gallery-controls 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#a7ada0;font-size:16px;background:#fff;border-radius:2px}.field-help{font-size:13px;line-height:1.8;color:var(--muted)}form .button{width:100%;margin-top:10px}.checkout-disclaimer{font-size:12px;line-height:1.8;text-align:center;color:var(--muted);margin:17px 0 0}.form-error{color:#983828;font-size:14px;line-height:1.7}.payment{max-width:1250px;margin:auto;padding:0 48px 65px}.payment-layout{display:grid;grid-template-columns:1.1fr 1fr;align-items:start;gap:60px;margin-top:15px}.payment-cover{height:530px}.payment-cover .book-photo{object-fit:cover}.payment-panel{padding:0}.payment-panel>.eyebrow{margin-top:0}.status-symbol{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:#e9ebe3;margin:22px 0 18px}.payment-panel h1{font:32px/1.5 var(--serif);margin:0 0 12px}.payment-panel>p{font-size:14px;line-height:1.8;color:var(--muted)}.order-lines{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 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@media(min-width:1600px){.header,.catalog-main,.detail,footer{max-width:1450px}.card-image{aspect-ratio:1.55}.gallery-stage{height:560px}}
@media(max-width:1100px){.header,.catalog-main,.detail,footer{padding-left:32px;padding-right:32px}.header{gap:25px}.header-note{display:none}.book-grid{gap:40px 24px}.card-title-row h2{font-size:25px}.card-info>p{min-height:50px}.card-actions button{padding:10px 12px}.detail-hero{gap:35px}.gallery-stage{height:430px}.purchase-row .button{min-width:150px}.detail-info h1{font-size:38px}.payment{padding-left:32px;padding-right:32px}.payment-layout{gap:35px}.payment-cover{height:490px}}
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@media(max-width:480px){.header{padding:0 20px;height:80px;gap:10px}.brand{display:block}.brand-en{display:block;font-size:27px}.brand-cn{display:block;font-size:10px;letter-spacing:2px;margin-top:5px}.header nav{gap:20px;font-size:12px}.catalog-main{padding:0 20px}.catalog-intro{display:block;padding:30px 0 26px}.catalog-intro h1{font-size:35px}.catalog-intro>.eyebrow{font-size:11px}.catalog-intro>p{font-size:14px;max-width:none;margin-top:18px}.book-grid{display:block}.book-card{margin-bottom:37px}.card-image{aspect-ratio:1.3}.card-info{padding-top:17px}.card-category{font-size:12px;margin-bottom:10px}.card-title-row h2{font-size:28px}.card-amount{font-size:19px}.card-info>p{min-height:0;font-size:14px;margin:10px 0 15px}.card-actions{padding-top:11px}.card-actions a,.card-actions button{font-size:13px}.card-actions button{min-height:44px;padding:10px 18px}.reading-note{margin-top:42px}.reading-note p{font-size:15px}footer{padding:28px 20px 22px;grid-template-columns:1fr;gap:27px}.footer-reading{justify-self:start}.footer-bottom{gap:15px;line-height:1.7}.detail{padding:0 20px}.gallery-stage{aspect-ratio:1.15}.gallery-stage>.book-photo{object-fit:cover}.gallery-controls{gap:5px;padding-top:12px}.gallery-controls button{min-width:60px}.detail-info h1{font-size:37px}.purchase-row .button{min-width:175px}.purchase-note{font-size:12px}.interior-preview,.back-preview{padding:22px;width:90%;margin:18px;max-height:93%}.interior-preview h2,.back-preview h2{font-size:23px}.interior-preview p{font-size:13px;line-height:1.85}.back-preview ol{font-size:15px;line-height:2.2}.trade-diagram section{flex:1 1 35%}.trade-diagram strong{font-size:17px}.end-buy{display:block}.end-buy .button{width:100%}.mobile-purchase{padding-left:20px;padding-right:20px}dialog{padding:29px 23px}dialog h2{font-size:28px}.checkout-book{gap:11px}.checkout-mini{width:62px;height:63px}.checkout-book h3{font-size:20px}.checkout-book p{font-size:10px}.checkout-book>strong{font-size:19px}.payment{padding-left:20px;padding-right:20px}.order-lines>div{font-size:13px}.payment-cover{aspect-ratio:1.3}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
/* Preserve each photograph's full composition, including the book edges. */
.card-image{aspect-ratio:4/3}.book-photo{object-fit:contain}.gallery-stage:has(>.book-photo){height:auto;aspect-ratio:4/3}.gallery-stage>.book-photo{object-fit:contain}.payment-cover{height:auto;aspect-ratio:4/3}.payment-cover .book-photo{object-fit:contain}