:root{--green:#1a7019;--green-soft:#eef6ee;--maroon:#7a1f30;--maroon-2:#96283d;--ink:#1c1c22;--muted:#6b6f7a;--paper:#ffffff;--card:#ffffff;--line:#e6e7ec;--gold:#b8892e;--soft:#f6f7fa;--shadow:0 1px 2px rgba(20,20,40,.04),0 6px 18px rgba(20,20,40,.05)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.55}
h1,h2,h3,.brand-name{font-family:"Crimson Pro",Georgia,serif;font-weight:600;line-height:1.15;margin:0}
h1{font-size:2.2rem;margin:.2rem 0 .6rem}
h2{font-size:1.5rem;margin:1.6rem 0 .6rem}
h3{font-size:1.1rem}
a{color:var(--maroon)}
a:hover{color:var(--maroon-2)}
p{margin:0 0 .9rem}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted);font-size:.92rem}
.kicker{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green);font-weight:600;margin:0 0 .4rem}
.lead{font-size:1.1rem;color:#454852;max-width:62ch}
.btn{display:inline-block;background:var(--maroon);color:#fff;text-decoration:none;padding:.6rem 1.1rem;border-radius:6px;font-weight:500;border:1px solid var(--maroon)}
.btn:hover{background:var(--maroon-2);color:#fff}
.btn.ghost{background:transparent;color:var(--maroon)}
.btn.ghost:hover{background:#faf3f4}
/* header */
.site-head{background:#fff;border-bottom:1px solid var(--line);border-top:4px solid var(--maroon)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 20px;flex-wrap:wrap}
.brand{display:block;line-height:0}.brand img{height:50px;width:auto;transition:height .3s}.site-head.scrolled .brand img{height:40px}
.brand-mark{grid-row:1/3;background:var(--maroon);color:#fff;font-family:"Crimson Pro",serif;font-weight:600;font-size:1.3rem;letter-spacing:.06em;padding:8px 10px;border-radius:6px}
.brand-name{font-size:1.35rem;color:var(--maroon)}
.brand-sub{font-size:.78rem;color:var(--muted)}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--ink);padding:8px 10px;border-radius:6px;font-size:.95rem;font-weight:500}
.nav a:hover,.nav a.current{background:var(--green-soft);color:var(--green)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:6px;font-size:1.3rem;padding:4px 10px}
@media (max-width:820px){.nav-toggle{display:block}.nav{display:none;width:100%;flex-direction:column}body.nav-open .nav{display:flex}}
/* hero */
.hero{padding:44px 0 26px;border-bottom:1px solid var(--line);margin-bottom:10px}
.hero h1{font-size:2.5rem;max-width:22ch}
.hero-actions{margin-top:18px}
@media (max-width:640px){.hero h1{font-size:1.9rem}}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-top:1.6rem}
/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px;margin:14px 0 24px}
.card{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);transition:box-shadow .15s,border-color .15s}
.card:hover{box-shadow:0 10px 26px rgba(20,20,40,.09);border-color:#d9dbe3;color:var(--ink)}
.cover{flex:0 0 76px;height:112px;background:var(--soft);border-radius:4px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.card.big .cover{flex-basis:96px;height:142px}
.nocover{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-family:"Crimson Pro",serif;font-weight:600;color:var(--maroon);font-size:1.1rem}
.card-body{min-width:0}
.card-series{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--green);font-weight:600}
.card h3{font-size:1.02rem;margin:.15rem 0 .2rem;line-height:1.25}
.card-authors{font-size:.9rem;color:#454852}
.card-meta{font-size:.8rem;color:var(--muted);margin-top:.35rem}
.price{color:var(--ink);font-weight:500}
.oop{color:#9a6b1f}
.site-foot strong{color:var(--green)}
.section-head a{color:var(--green)}
.facts dt{color:var(--green)}
.series-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:14px 0 26px}
.series-card{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--green);border-radius:10px;padding:16px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink)}
.series-card h3{color:var(--maroon);margin-bottom:.4rem}
.series-card p{font-size:.92rem;color:#454852;margin-bottom:.5rem}
.series-card .count{font-size:.8rem;color:var(--muted)}
.dist-strip{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin:10px 0 30px}
.dist-strip h2{margin-top:0}
.dist-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:12px 0 18px}
.dist{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:.95rem;box-shadow:var(--shadow)}
.dist h3{color:var(--maroon);margin-bottom:.4rem}
.toc{font-size:.92rem;margin:0 0 .5rem}
.group-head{margin-top:2rem;padding-top:1rem;border-top:1px solid var(--line)}
/* book page */
.crumbs{font-size:.88rem;color:var(--muted);margin:14px 0 6px}
.book{display:grid;grid-template-columns:220px 1fr;gap:34px;margin:10px 0 28px;align-items:start}
@media (max-width:700px){.book{grid-template-columns:1fr}.book-cover{max-width:200px}}
.book-cover img{width:100%;border:1px solid var(--line);border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.book h1{font-size:2rem}
.authors{font-size:1.15rem;color:#454852;margin-bottom:1rem}
.desc{max-width:70ch}
.desc p{margin-bottom:.8rem}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px 18px;margin:1.2rem 0;padding:14px 16px;background:var(--soft);border:1px solid var(--line);border-radius:10px}
.facts div{margin:0}
.facts dt{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.facts dd{margin:0;font-weight:500}
.book-actions{display:flex;gap:10px;flex-wrap:wrap}
/* filter */
.filter-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:10px 0}
.filter-bar input,.filter-bar select,.form input,.form select{font:inherit;padding:.55rem .7rem;border:1px solid #d3d5dd;border-radius:8px;background:#fff}
.filter-bar input{min-width:260px;flex:1;max-width:460px}
.form{max-width:420px;display:grid;gap:12px}
.form label{display:grid;gap:4px;font-size:.92rem}
/* footer */
.site-foot{margin-top:40px;background:var(--soft);border-top:1px solid var(--line);font-size:.9rem;color:#454852}
.foot-inner{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:22px 20px 28px}
@media (max-width:700px){.foot-inner{grid-template-columns:1fr}}
/* ---------- motion + home upgrade ---------- */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-out .18s ease-in both}
::view-transition-new(root){animation:vt-in .28s ease-out both}
@keyframes vt-out{to{opacity:0;transform:translateY(-6px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(8px)}}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:calc(var(--d,0)*90ms)}
.reveal.in{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1),box-shadow .2s,border-color .2s}
.stagger.in>*{opacity:1;transform:none}
.stagger.in>*:nth-child(1){transition-delay:0ms}.stagger.in>*:nth-child(2){transition-delay:70ms}.stagger.in>*:nth-child(3){transition-delay:140ms}.stagger.in>*:nth-child(4){transition-delay:210ms}.stagger.in>*:nth-child(5){transition-delay:280ms}.stagger.in>*:nth-child(6){transition-delay:350ms}
.card{will-change:transform}
.card:hover{transform:translateY(-3px)}
.stagger.in>.card:hover{transform:translateY(-3px)}
.card .cover img{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.card:hover .cover img{transform:scale(1.05)}
.series-card{position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s}
.series-card::after{content:"";position:absolute;inset:auto 0 0 0;height:3px;background:linear-gradient(90deg,var(--green),var(--maroon));transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.series-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.08)}
.series-card:hover::after{transform:scaleX(1)}
.btn{transition:background .2s,transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px rgba(109,31,44,.22)}
.btn:active{transform:translateY(0)}
/* header shrink */
.site-head{position:sticky;top:0;z-index:20;transition:box-shadow .3s}
.site-head.scrolled{box-shadow:0 4px 18px rgba(0,0,0,.08)}
.head-inner{transition:padding .3s}
.site-head.scrolled .head-inner{padding-top:8px;padding-bottom:8px}
.brand-sub{transition:opacity .3s,max-height .3s;max-height:20px;overflow:hidden}
.site-head.scrolled .brand-sub{opacity:0;max-height:0}
.site-head{border-top-color:var(--maroon)}
/* hero with cover stack */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;padding:54px 0 36px;position:relative;overflow:visible}
.hero::before{content:"";position:absolute;inset:-60px -50vw 0;z-index:-1;background:radial-gradient(55% 70% at 72% 35%,rgba(122,31,48,.07),transparent 70%),radial-gradient(45% 55% at 8% 95%,rgba(184,137,46,.07),transparent 70%);pointer-events:none}
.hero h1{font-size:3rem;max-width:18ch}
.hero h1 em{font-style:italic;color:var(--maroon)}
.hero-stack{position:relative;height:380px;perspective:1200px}
.stack-inner{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .15s ease-out}
.stack-book{position:absolute;width:150px;left:calc(50% - 75px);top:calc(50% - 110px);border-radius:4px;overflow:hidden;box-shadow:0 18px 40px rgba(20,20,40,.22),0 2px 6px rgba(0,0,0,.1);transform:translate3d(calc((var(--i) - 3)*62px),calc(abs(var(--i) - 3)*10px),calc((3 - abs(var(--i) - 3))*40px)) rotate(calc((var(--i) - 3)*4deg));transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .3s;animation:float 6s ease-in-out infinite;animation-delay:calc(var(--i)*-.8s);z-index:calc(10 - abs(var(--i) - 3))}
.stack-book img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover}
.stack-book:hover{transform:translate3d(calc((var(--i) - 3)*62px),-14px,120px) rotate(0deg) scale(1.06);box-shadow:0 30px 60px rgba(40,20,10,.35);z-index:20;animation-play-state:paused}
@keyframes float{0%,100%{margin-top:0}50%{margin-top:-10px}}
@media (max-width:900px){.hero{grid-template-columns:1fr}.hero-stack{height:300px}.stack-book{width:110px;left:calc(50% - 55px);top:calc(50% - 85px);transform:translate3d(calc((var(--i) - 3)*44px),calc(abs(var(--i) - 3)*8px),0) rotate(calc((var(--i) - 3)*4deg))}}
@media (max-width:640px){.hero h1{font-size:2.1rem}.hero{padding-top:30px}}
/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:6px 0 10px;padding:22px 24px;background:var(--soft);border:1px solid var(--line);border-radius:12px}
.stat{display:grid;gap:2px}
.stat .num{font-family:"Crimson Pro",serif;font-size:2.4rem;font-weight:600;color:var(--maroon);line-height:1;font-variant-numeric:tabular-nums}
.stat .lab{font-size:.85rem;color:var(--muted)}
/* authors cta */
.authors-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(135deg,#ffffff,#f7f3f4);border:1px solid var(--line);border-radius:12px;padding:26px 28px;margin:10px 0 20px}
.authors-cta h2{margin:.2rem 0 .5rem}
.authors-cta p{margin:0;max-width:60ch;color:#454852}
@media (max-width:700px){.authors-cta{flex-direction:column;align-items:flex-start}}
/* book page polish */
.desc h3{margin:1.2rem 0 .4rem;font-size:1.15rem;color:var(--maroon)}
.desc blockquote{margin:.4rem 0 .3rem;padding:.6rem 1rem;border-left:3px solid var(--green);background:var(--soft);font-family:"Crimson Pro",serif;font-size:1.08rem;font-style:italic}
.desc cite{display:block;font-style:normal;font-size:.88rem;color:var(--muted);margin:0 0 .9rem 1rem}
.book-cover img{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.book-cover:hover img{transform:translateY(-4px) rotate(-1deg)}
/* reduced motion: show everything, no animation */
@media (prefers-reduced-motion:reduce){.reveal,.stagger>*{opacity:1;transform:none;transition:none}.stack-book{animation:none}::view-transition-old(root),::view-transition-new(root){animation:none}html{scroll-behavior:auto}}
/* polish */
.nocover{flex-direction:column;gap:2px;background:linear-gradient(160deg,#f7f7fa,#e9eaf0);border-left:4px solid var(--maroon)}
.nocover b{font-family:Inter,sans-serif;font-size:.8rem;color:var(--muted);font-weight:500}
.card-authors{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.dist p,.dist-grid div{overflow-wrap:anywhere}
@media (max-width:900px){.hero-stack{height:280px;margin-top:-10px}.stack-book{top:calc(50% - 82px)}}
/* no horizontal overflow from the hero bleed / cover stack */
html,body{overflow-x:hidden;overflow-x:clip;max-width:100%}
.hero::before{inset:-60px calc(50% - 50vw) 0}