.book-hero{max-width:var(--max);margin:0 auto;padding:clamp(2rem,4vw,3rem) var(--pad-x) clamp(1rem,2vw,1.5rem)}.back-link{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);text-decoration:none;transition:color .4s ease}.back-link .arrow{display:inline-block;transition:transform .4s cubic-bezier(.2,.8,.25,1)}.back-link:hover{color:var(--accent)}.back-link:hover .arrow{transform:translate(-4px)}.book-main{max-width:var(--max);margin:0 auto;padding:0 var(--pad-x) clamp(5rem,10vw,8rem)}.book-grid{display:grid;grid-template-columns:6fr 5fr;gap:clamp(2.5rem,6vw,5rem);padding:clamp(1rem,2.5vw,2rem) 0 clamp(1.5rem,3vw,2.5rem);align-items:stretch}.book-cover{align-self:stretch}.cover-frame{width:100%;height:100%;display:flex;justify-content:center;align-items:center}.cover-img{filter:drop-shadow(0 2px 3px rgba(21,40,80,.13)) drop-shadow(0 18px 34px rgba(21,40,80,.17))}body.dark .cover-img{filter:drop-shadow(0 2px 3px rgba(0,0,0,.5)) drop-shadow(0 18px 34px rgba(0,0,0,.45))}.cover-img{display:block;width:auto;height:auto;max-width:100%}.book-info .eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:1.25rem}.book-title{font-family:var(--serif);font-style:italic;font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.05;color:var(--navy);margin:0 0 .75rem;font-variation-settings:"opsz" 144,"wght" 600,"SOFT" 30;letter-spacing:-.01em}.book-subtitle{font-family:var(--serif);font-style:italic;font-size:clamp(1.1rem,1.6vw,1.25rem);color:var(--muted);margin:0 0 1.75rem;font-variation-settings:"opsz" 72,"wght" 400,"SOFT" 50}.book-synopsis p{font-family:var(--serif);font-size:1.05rem;line-height:1.7;color:var(--navy);font-variation-settings:"opsz" 24,"wght" 400,"SOFT" 0}.book-synopsis p+p{margin-top:1rem}.book-chapters{padding-top:clamp(2.5rem,5vw,4rem)}.book-chapters .section-h{margin-bottom:clamp(1.5rem,3vw,2.25rem)}.chapters-grid{width:100%}.chapter-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.75rem,4vw,3.5rem)}.chapter-list li{display:block;padding:0}.chapter-list .num{display:block;font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;color:var(--accent);margin-bottom:.85rem}.chapter-title{font-family:var(--serif);font-style:italic;font-size:clamp(1.1rem,1.6vw,1.3rem);line-height:1.3;color:var(--navy);margin:0 0 .65rem;font-variation-settings:"opsz" 72,"wght" 500,"SOFT" 50;transition:color .35s ease,font-variation-settings .4s ease}.chapter-list li:hover .chapter-title{color:var(--accent);font-variation-settings:"opsz" 72,"wght" 700,"SOFT" 100}:lang(zh-Hant) .chapter-title{font-style:normal;font-variation-settings:normal;font-weight:500;transition:color .35s ease,font-weight .45s cubic-bezier(.2,.8,.25,1),letter-spacing .45s ease}:lang(zh-Hant) .chapter-list li:hover .chapter-title{font-weight:700;letter-spacing:.02em}.chapter-blurb{font-family:var(--serif);font-size:.95rem;line-height:1.55;color:var(--muted);margin:0}.book-formats{padding-top:clamp(3.5rem,7vw,6rem)}.book-formats .section-h{margin-bottom:clamp(1.5rem,3vw,2.25rem)}.format-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(.75rem,1.5vw,1.25rem)}.format-card{position:relative;display:flex;flex-direction:column;padding:clamp(1.6rem,2.5vw,2rem) clamp(1.25rem,2vw,1.5rem) clamp(1.1rem,1.8vw,1.4rem);border:1px solid var(--rule);background:transparent;transition:transform .4s cubic-bezier(.2,.8,.25,1),box-shadow .4s ease}.format-card:before{content:"";position:absolute;top:-1px;left:0;width:0;height:2px;background:var(--accent);transition:width .55s cubic-bezier(.2,.8,.25,1)}.format-card:hover:before{width:100%}.format-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px #1528501a}.format-name{font-family:var(--serif);font-style:italic;font-size:clamp(1.2rem,1.8vw,1.4rem);color:var(--navy);margin:0 0 .6rem;font-variation-settings:"opsz" 72,"wght" 600,"SOFT" 30}.format-price{font-family:var(--mono);font-size:clamp(1.45rem,2.4vw,1.85rem);color:var(--navy);margin:0;letter-spacing:-.02em;font-weight:500;line-height:1}.format-isbn{font-family:var(--mono);font-size:.65rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:.55rem 0 1.5rem;line-height:1.5;word-break:break-all}.format-buy{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding:.75rem 1rem;background:var(--navy);color:var(--bg);text-decoration:none;font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;border:1.5px solid var(--navy);transition:background .4s ease,border-color .4s ease}.format-buy .arrow{display:inline-block;transition:transform .4s cubic-bezier(.2,.8,.25,1)}.format-buy:hover{background:var(--accent);border-color:var(--accent)}.format-buy:hover .arrow{transform:translate(4px)}.book-title .char,.book-subtitle .char{display:inline-block;opacity:0;transform:translateY(8px);animation:book-spell-out .5s cubic-bezier(.2,.8,.25,1) forwards;animation-delay:calc(.4s + var(--i, 0) * 35ms)}@keyframes book-spell-out{to{opacity:1;transform:translateY(0)}}@media(max-width:820px){.chapter-list{grid-template-columns:1fr;gap:2.25rem}}@media(max-width:880px){.book-grid{grid-template-columns:1fr}.book-cover{position:static}.cover-frame{max-width:320px}.format-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.format-grid{grid-template-columns:1fr}}