/* ================= E. O. WILSON REFERENCE SERIES — polished build ================= */
:root{
  --ink:#141B2E; --ink2:#3A4763; --ink3:#6C7690;
  --navy:#131C31; --navy2:#1D2942; --navy3:#243352;
  --brown:#3B2A1E; --leather:#5A3E29;
  --gold:#C9A24B; --gold-lt:#E7CE86; --gold-dk:#A17E33;
  --paper:#F5F2EA; --paper2:#EFEADD; --white:#fff;
  --rule:#DED8C6; --rule-soft:#EAE5D6;
  --firm:#2F6E52; --cream:#F7F0DE;
  --display:"Newsreader",Georgia,"Times New Roman",serif;
  --body:"Inter",system-ui,-apple-system,Segoe UI,sans-serif;
  --wrap:1180px; --gut:32px;
  --sh-sm:0 6px 18px rgba(20,27,46,.08);
  --sh-md:0 14px 34px rgba(20,27,46,.14);
  --sh-lg:0 26px 60px rgba(20,27,46,.22);
}
*{box-sizing:border-box} html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 var(--gut)}
a{color:var(--gold-dk);text-decoration:none}a:hover{color:var(--leather)}
h1,h2,h3,h4{margin:0;font-family:var(--display);font-weight:600;line-height:1.1;letter-spacing:-.01em;color:var(--ink)}
/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:60;background:rgba(19,28,49,.92);backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid rgba(201,162,75,.18)}
header.site .wrap{display:flex;align-items:center;gap:26px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:17px;color:#fff;letter-spacing:.01em}
.brand .em{width:26px;height:26px;flex:none}
.brand small{font-family:var(--body);font-weight:500;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-lt);display:block;margin-top:1px}
header.site nav{margin-left:auto;display:flex;gap:24px}
header.site nav a{font-family:var(--body);color:#D6DCEA;font-size:14px;font-weight:500;letter-spacing:.01em}
header.site nav a:hover{color:var(--gold-lt)}
/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;min-height:84vh;display:flex;align-items:center}
.hero .photo{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.hero .grade{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,17,32,.72),rgba(11,17,32,.5) 45%,rgba(11,17,32,.82)),
    radial-gradient(1100px 560px at 78% 12%,rgba(201,162,75,.22),transparent 60%)}
.hero .wrap{position:relative;z-index:2;padding:96px 32px}
.hero .kicker{font-family:var(--body);font-size:12.5px;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:22px}
.hero h1{font-size:clamp(44px,6.6vw,80px);font-weight:600;line-height:1.02;color:#fff;max-width:16ch;text-shadow:0 2px 40px rgba(0,0,0,.35)}
.hero .rule-d{display:flex;align-items:center;gap:14px;margin:24px 0;max-width:360px;color:var(--gold)}
.hero .rule-d::before,.hero .rule-d::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--gold),transparent)}
.hero .rule-d::before{background:linear-gradient(90deg,transparent,var(--gold))}
.hero .rule-d i{width:8px;height:8px;background:var(--gold);transform:rotate(45deg);display:block}
.hero .tag{font-family:var(--display);font-style:italic;font-size:clamp(20px,2.4vw,28px);color:var(--gold-lt)}
.hero .deck{font-family:var(--body);font-size:clamp(16px,1.6vw,19px);line-height:1.6;max-width:50ch;margin:20px 0 34px;color:#E4E8F1}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--body);font-weight:600;font-size:15px;
  padding:15px 30px;border-radius:3px;letter-spacing:.01em;transition:transform .16s ease,box-shadow .16s ease,background .16s ease;cursor:pointer}
.btn.gold{background:var(--gold);color:#211804;box-shadow:var(--sh-sm)}
.btn.gold:hover{background:var(--gold-lt);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn.line{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(231,206,134,.55)}
.btn.line:hover{background:rgba(231,206,134,.12);transform:translateY(-2px)}
.btn.brown{background:var(--brown);color:var(--cream)}.btn.brown:hover{background:var(--leather);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn.ghost{background:transparent;color:var(--brown);box-shadow:inset 0 0 0 1.5px var(--gold-dk)}.btn.ghost:hover{background:rgba(201,162,75,.1)}
.hero .row{display:flex;gap:14px;flex-wrap:wrap}
.hero .pub{margin-top:28px;font-family:var(--body);font-size:12px;letter-spacing:.06em;color:#B9C2D6}
.hero .pub b{color:var(--gold-lt);font-weight:600}
/* ---------- reveal on scroll ---------- */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
[data-reveal].in{opacity:1;transform:none}
/* ---------- section scaffolding ---------- */
.sec{padding:88px 0}
.sec .eyebrow{font-family:var(--body);font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dk)}
.sec h2{font-size:clamp(28px,3.6vw,44px);margin:14px 0 0}
.sec .lead{font-family:var(--body);font-size:19px;line-height:1.62;color:var(--ink2);max-width:62ch;margin:18px 0 0}
.sec.center{text-align:center}.sec.center .lead{margin-left:auto;margin-right:auto}
.sec.paper2{background:var(--paper2)}
.sec.navy{background:linear-gradient(165deg,var(--navy),var(--navy2));color:#E7ECF5}
.sec.navy h2{color:#fff}.sec.navy .lead{color:#C3CBDD}.sec.navy .eyebrow{color:var(--gold-lt)}
/* ---------- four-volume showcase ---------- */
.vols{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:54px}
.vol{background:#fff;border:1px solid var(--rule);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-sm);transition:transform .22s ease,box-shadow .22s ease;text-align:left}
.vol:hover{transform:translateY(-6px);box-shadow:var(--sh-lg)}
.vol .cover{aspect-ratio:1484/1060;background:#0F1626 center/cover no-repeat}
.vol.v3 .cover,.vol.v4 .cover{aspect-ratio:1369/1149}
.vol .m{padding:22px 22px 26px}
.vol .vn{font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--gold-dk)}
.vol h3{font-size:20px;line-height:1.22;margin:8px 0 9px;min-height:2.5em;color:var(--brown)}
.vol p{font-family:var(--body);font-size:13.5px;line-height:1.5;color:var(--ink3);margin:0 0 15px}
.vol .go{font-family:var(--body);font-size:13px;font-weight:600;color:var(--firm)}
.vol .go.soon{color:var(--gold-dk)}
/* ---------- quote ---------- */
.quote{background:var(--paper);padding:92px 0;text-align:center}
.quote .mark{font-family:var(--display);font-size:80px;line-height:0;color:var(--gold);height:42px;display:block}
.quote blockquote{margin:0 auto;max-width:20ch;font-family:var(--display);font-weight:500;font-size:clamp(26px,4vw,44px);line-height:1.24;color:var(--brown)}
.quote .rule-d{display:flex;align-items:center;justify-content:center;gap:14px;margin:26px auto 0;max-width:300px;color:var(--gold)}
.quote .rule-d::before,.quote .rule-d::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.quote .rule-d i{width:8px;height:8px;background:var(--gold);transform:rotate(45deg);display:block}
.quote cite{display:block;margin-top:22px;font-family:var(--body);font-style:normal;font-size:14px;font-weight:600;color:var(--gold-dk)}
.quote cite span{color:var(--ink3);font-weight:400}
/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-top:12px}
.stats>div{border-top:2px solid var(--gold);padding-top:18px}
.stats .n{font-family:var(--display);font-weight:600;font-size:clamp(36px,4.4vw,54px);line-height:1;color:#fff}
.stats .n em{font-style:normal;color:var(--gold-lt)}
.stats .l{font-family:var(--body);font-size:14px;color:#B9C2D6;margin-top:10px;max-width:22ch}
/* ---------- footer ---------- */
footer.site{background:var(--navy);color:#B3BCD0}
footer.site .wrap{padding:56px 32px 40px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px}
footer.site h4{font-family:var(--body);font-weight:700;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-lt);margin:0 0 14px}
footer.site a{display:block;color:#B3BCD0;font-family:var(--body);font-size:14.5px;margin:0 0 9px}footer.site a:hover{color:#fff}
footer.site .bk .b{display:flex;align-items:center;gap:10px;font-family:var(--display);font-size:20px;color:#fff;margin-bottom:10px}
footer.site .disc{grid-column:1/-1;border-top:1px solid rgba(201,162,75,.16);margin-top:12px;padding-top:20px;font-family:var(--body);font-size:12.5px;line-height:1.6;color:#8A93A9}
/* ---------- responsive ---------- */
@media(max-width:960px){.vols{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}footer.site .wrap{grid-template-columns:1fr}header.site nav{display:none}}
@media(max-width:560px){.vols{grid-template-columns:1fr}.hero{min-height:auto;padding:30px 0}}
@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none}.hero .photo{transform:none}}

/* nav buttons (Contact / Order Books) */
header.site nav a.nav-btn{padding:8px 16px;border-radius:3px;box-shadow:inset 0 0 0 1.5px rgba(231,206,134,.5);
  color:#E7CE86;font-weight:600;transition:all .15s ease}
header.site nav a.nav-btn:hover{background:rgba(231,206,134,.12);color:#fff}
header.site nav a.nav-btn-gold{background:var(--gold);color:#211804;box-shadow:none}
header.site nav a.nav-btn-gold:hover{background:var(--gold-lt);color:#211804}
/* right-aligned hero text so it doesn't collide with the image's baked-in title */
.hero.hero-right .grade{background:linear-gradient(90deg,rgba(11,17,32,0) 30%,rgba(11,17,32,.5) 66%,rgba(11,17,32,.82)),radial-gradient(900px 520px at 20% 15%,rgba(201,162,75,.16),transparent 60%)}
.hero.hero-right .wrap{display:flex;justify-content:flex-end}
.hero.hero-right .wrap > div.hcol{max-width:560px;text-align:left}
@media(max-width:720px){.hero.hero-right .grade{background:linear-gradient(180deg,rgba(11,17,32,.55),rgba(11,17,32,.82))}.hero.hero-right .wrap{justify-content:flex-start}}

/* left-side legibility gradient for the clean (text-free) hero */
.hero .grade{background:
  linear-gradient(90deg,rgba(11,17,32,.80) 0%,rgba(11,17,32,.55) 34%,rgba(11,17,32,.12) 60%,rgba(11,17,32,0) 100%),
  linear-gradient(180deg,rgba(11,17,32,.35),rgba(11,17,32,.35)),
  radial-gradient(1000px 520px at 22% 20%,rgba(201,162,75,.16),transparent 60%);}
/* hero-clean-grade marker */

/* empty cover placeholder for Volume 1 (image removed, box retained) */
.vol .cover.cover-empty{background:linear-gradient(160deg,#2A1F16,#3B2A1E 60%,#5A3E29);
  display:flex;align-items:center;justify-content:center}
.vol .cover.cover-empty::after{content:"Cover coming soon";font-family:var(--body);font-size:12.5px;
  letter-spacing:.08em;color:rgba(231,206,134,.75);text-transform:uppercase}

/* ===== Volume-1 interior pages ===== */
.crumb{font-family:var(--body);font-size:13px;color:#8A7C66;padding:20px 0 0}
.crumb a{color:#8A7C66}.crumb a:hover{color:var(--gold-dk)}.crumb span{opacity:.5;margin:0 6px}
/* part/landing hero built on the volume cover */
.phero{position:relative;overflow:hidden;color:#fff;min-height:62vh;display:flex;align-items:center}
.phero .pcover{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(1.02)}
.phero .pgrade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,17,32,.86) 0%,rgba(11,17,32,.62) 40%,rgba(11,17,32,.2) 70%,rgba(11,17,32,.05) 100%),linear-gradient(180deg,rgba(11,17,32,.3),rgba(11,17,32,.55))}
.phero .wrap{position:relative;z-index:2;padding:76px 32px}
.phero .pcol{max-width:600px}
.phero .kicker{font-family:var(--body);font-size:12.5px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:18px}
.phero h1{font-family:var(--display);font-weight:600;font-size:clamp(38px,5.4vw,64px);line-height:1.02;color:#fff;text-shadow:0 2px 30px rgba(0,0,0,.35)}
.phero .rule-d{display:flex;align-items:center;gap:14px;margin:22px 0;max-width:320px;color:var(--gold)}
.phero .rule-d::before,.phero .rule-d::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--gold),transparent)}
.phero .rule-d::before{background:linear-gradient(90deg,transparent,var(--gold))}
.phero .rule-d i{width:8px;height:8px;background:var(--gold);transform:rotate(45deg);display:block}
.phero .tag{font-family:var(--display);font-style:italic;font-size:clamp(19px,2.2vw,25px);color:var(--gold-lt)}
.phero .deck{font-family:var(--body);font-size:clamp(16px,1.6vw,19px);line-height:1.6;max-width:48ch;margin:18px 0 30px;color:#E4E8F1}
.phero .row{display:flex;gap:14px;flex-wrap:wrap}
/* entry list (parts / chapters) */
.entrylist{border-top:1px solid var(--rule)}
.entry{display:flex;gap:26px;align-items:baseline;padding:24px 4px;border-bottom:1px solid var(--rule)}
.entry .idx{font-family:var(--body);font-weight:800;font-size:14px;color:var(--gold-dk);min-width:100px;letter-spacing:.05em}
.entry .ebody h3{font-family:var(--display);font-weight:600;font-size:23px;color:var(--brown)}
.entry .ebody h3 a{color:var(--brown)}.entry .ebody h3 a:hover{color:var(--gold-dk)}
.entry .ebody p{font-family:var(--body);margin:6px 0 0;color:var(--ink3);font-size:16px}
.entry.soon .ebody h3{color:#9a9384}
/* reading layout */
.sec.chapter{padding:0 0 40px}
.reading-head{padding:64px 0 26px}
.reading-head .kicker{font-family:var(--body);font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dk);margin-bottom:14px}
.reading-head h1{font-family:var(--display);font-weight:600;font-size:clamp(32px,4.6vw,50px);color:var(--brown);max-width:20ch}
.reading-head .sub{font-family:var(--display);font-style:italic;font-size:22px;color:var(--gold-dk);margin-top:12px}
.reading-head .rule-d{display:flex;align-items:center;gap:14px;margin:20px 0 0;max-width:280px;color:var(--gold)}
.reading-head .rule-d::before,.reading-head .rule-d::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--gold),transparent)}
.reading-head .rule-d::before{background:linear-gradient(90deg,transparent,var(--gold))}
.reading-head .rule-d i{width:7px;height:7px;background:var(--gold);transform:rotate(45deg);display:block}
article.reading{font-family:var(--display);font-size:20px;line-height:1.72;color:#26210E}
article.reading p{margin:0 0 1.15em;max-width:68ch;color:#2b2415}
.sources{margin-top:40px;padding:22px 24px;background:var(--paper2);border-left:4px solid var(--gold);font-family:var(--body);font-size:15px;color:#5a5142}
.sources b{color:var(--brown)}
.order-cta{margin:38px 0 0;padding:24px 26px;background:linear-gradient(160deg,var(--navy),var(--navy2));color:#E7ECF5;border-radius:6px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-family:var(--body)}
.order-cta .t{font-size:16px;max-width:46ch}
.pager{display:flex;justify-content:space-between;gap:16px;margin:44px 0 0;font-family:var(--body);font-size:14.5px;font-weight:600;padding-bottom:10px}
.pager a{color:var(--gold-dk)}
@media(max-width:640px){.entry{flex-direction:column;gap:6px}.entry .idx{min-width:0}.phero .pgrade{background:linear-gradient(180deg,rgba(11,17,32,.55),rgba(11,17,32,.82))}}

/* Volume-1 landing: waterfall bg hero with brown book product shot bottom-right */
.phero.phero-book{min-height:78vh}
.phero.phero-book .pgrade{background:linear-gradient(90deg,rgba(11,17,32,.84) 0%,rgba(11,17,32,.55) 38%,rgba(11,17,32,.12) 64%,rgba(11,17,32,0) 100%),linear-gradient(180deg,rgba(11,17,32,.22),rgba(11,17,32,.5))}
.phero.phero-book .wrap{position:relative;display:block}
.phero.phero-book .pcol{max-width:560px}
.product-shot{position:absolute;right:16px;bottom:-6px;z-index:3;display:block;text-decoration:none;
  transition:transform .25s ease}
.product-shot img{width:min(38vw,430px);height:auto;display:block;
  filter:drop-shadow(0 26px 46px rgba(0,0,0,.5));border-radius:4px}
.product-shot:hover{transform:translateY(-6px)}
.product-shot .ps-cap{display:block;text-align:center;margin-top:12px;font-family:var(--body);
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--gold-lt);text-shadow:0 1px 8px rgba(0,0,0,.6)}
@media(max-width:900px){
  .phero.phero-book{min-height:auto;padding:24px 0 40px}
  .product-shot{position:static;margin:34px auto 0;text-align:center}
  .product-shot img{width:min(64vw,300px);margin:0 auto}
}

/* Printed-edition order section with product shot beside the copy */
.order-sec .order-split{display:grid;grid-template-columns:1.3fr .7fr;gap:48px;align-items:center}
.order-book{display:block;justify-self:end}
.order-book img{width:min(30vw,340px);height:auto;display:block;border-radius:4px;
  filter:drop-shadow(0 26px 50px rgba(0,0,0,.55));transition:transform .25s ease}
.order-book:hover img{transform:translateY(-6px)}
@media(max-width:820px){.order-sec .order-split{grid-template-columns:1fr;gap:32px}.order-book{justify-self:center}.order-book img{width:min(60vw,280px)}}

/* Vol-1 landing: product shot at top of Contents, buy buttons at bottom */
.intro-split{display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:center;margin-bottom:44px}
.intro-book{display:block;justify-self:end}
.intro-book img{width:min(30vw,320px);height:auto;display:block;border-radius:4px;
  filter:drop-shadow(0 22px 44px rgba(20,27,46,.34));transition:transform .25s ease}
.intro-book:hover img{transform:translateY(-6px)}
.buybtns{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
@media(max-width:820px){.intro-split{grid-template-columns:1fr;gap:28px}.intro-book{justify-self:center}.intro-book img{width:min(58vw,260px)}}

/* Order Books page */
.order-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.order-card{display:flex;gap:22px;background:#fff;border:1px solid var(--rule);border-radius:8px;padding:22px;box-shadow:var(--sh-sm)}
.oc-cover{flex:none;width:130px;background:#0F1626 center/cover no-repeat;border-radius:4px;aspect-ratio:1484/1060;box-shadow:0 8px 20px rgba(20,27,46,.2)}
.oc-body h3{font-family:var(--display);font-weight:600;font-size:19px;color:var(--brown);margin:6px 0 8px;line-height:1.2}
.oc-body .oc-vn{font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-dk)}
.oc-body p{font-family:var(--body);font-size:14px;color:var(--ink3);margin:0 0 14px;line-height:1.5}
.obk-soon{font-family:var(--body);font-size:13px;font-weight:600;color:var(--gold-dk)}
.order-card .buybtns .btn{padding:10px 18px;font-size:13.5px}
.order-card .btn.ghost{color:var(--brown);box-shadow:inset 0 0 0 1.5px var(--gold-dk)}
@media(max-width:820px){.order-grid{grid-template-columns:1fr}.oc-cover{width:110px}}

/* wide-banner hero tuning (2.16:1 image) */
.phero{min-height:66vh}
.phero .pcover{background-position:center center}
/* hero-wide-tune marker */

/* ===== Volume 2 elements ===== */
.essay-biobib strong em, .reading .bktitle{font-style:italic;font-weight:600;color:var(--brown)}
.essay-sources-h{font-family:var(--display);font-weight:600;font-size:20px;color:var(--brown);margin-top:32px}
.bibrec{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px 30px;
  background:var(--paper2);border-left:4px solid var(--gold);padding:20px 24px;margin:26px 0 8px;
  font-family:var(--body);font-size:15px;color:#4a4436}
.bibrec .bl{display:block;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-dk);margin-bottom:3px}
.bktoc{font-family:var(--body);font-size:16px;color:#3b3527;columns:2;column-gap:40px;margin:8px 0 0;padding-left:20px}
.bktoc li{margin:0 0 8px;break-inside:avoid}
.abs-chapter{margin:0 0 34px}
.abs-chapter h3{font-family:var(--display);font-weight:600;font-size:22px;color:var(--brown);
  padding-bottom:8px;border-bottom:1px solid var(--rule);margin:32px 0 16px}
.abs{font-family:var(--body);font-size:15.5px;line-height:1.62;color:#33302a;margin:0 0 16px;padding-left:16px;border-left:2px solid var(--rule-soft)}
.abs-kw{font-weight:700;color:var(--brown)}
.lc-tag{font-family:var(--body);font-size:12px;font-weight:600;color:var(--gold-dk);white-space:nowrap}
@media(max-width:640px){.bktoc{columns:1}}

/* Order page: two buy peers + distinct borrow */
.btn.buy-print{background:var(--gold);color:#211804;box-shadow:var(--sh-sm)}
.btn.buy-print:hover{background:var(--gold-lt);color:#211804;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn.buy-ebook{background:var(--brown);color:var(--cream);box-shadow:var(--sh-sm)}
.btn.buy-ebook:hover{background:var(--leather);color:var(--cream);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn.borrow{background:transparent;color:var(--firm);box-shadow:inset 0 0 0 1.5px var(--firm)}
.btn.borrow:hover{background:rgba(47,110,82,.10);color:var(--firm);transform:translateY(-2px)}
.order-card .buybtns{display:flex;gap:10px;flex-wrap:wrap}
.order-card .buybtns .btn{padding:10px 16px;font-size:13px}




/* Wilson 24 books — two columns, author + pub/date/isbn line + note */
.wbooks{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.wcol{display:flex;flex-direction:column}
.wbook{padding:18px 0;border-bottom:1px solid var(--rule)}
.wcol .wbook:first-child{border-top:1px solid var(--rule)}
.wb-meta{display:flex;flex-direction:column;gap:2px}
.wb-title{font-family:var(--display);font-weight:600;font-size:18px;color:var(--brown);line-height:1.2}
.wb-auth{font-family:var(--body);font-size:13.5px;color:#5a5142;margin-top:3px}
.wb-pub{font-family:var(--body);font-size:12.5px;color:var(--ink3);margin-top:1px}
.wb-note{font-family:var(--body);font-size:13.5px;color:var(--ink2);line-height:1.5;margin-top:6px}
.wb-btns{display:flex;gap:9px;margin-top:12px}
.wb-btns .btn{padding:8px 14px;font-size:12px;white-space:nowrap}
@media(max-width:900px){.wbooks{grid-template-columns:1fr}}