/* Layout: a campus bookshop-and-treasure-chest — plum masthead with the logo, category tiles, a jewellery tray, degree bundles, then a cover-wall of prescribed textbooks */
:root{
  --plum:#2A1B2E; --plum-deep:#1c1220; --gold:#D4AF37; --gold-ink:#8a6d14; --parchment:#F2E7D5;
  --bg:#F7F0E3; --paper:#FFFBF3; --ink:#241a27; --muted:#6c5d6f; --line:#e6d9c4; --chip:#efe4cf;
  --wa:#1d7a4c; --ok:#2f6b4a;
  --display:"Playfair Display",Georgia,"Times New Roman",serif;
  --body:"DM Sans","Segoe UI",system-ui,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#1a1220; --paper:#231829; --ink:#F2E7D5; --muted:#bba9bf; --line:#3d2d45; --chip:#2f2236; --gold-ink:#D4AF37; --wa:#45c385; --ok:#7cc79f; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#1a1220; --paper:#231829; --ink:#F2E7D5; --muted:#bba9bf; --line:#3d2d45; --chip:#2f2236; --gold-ink:#D4AF37; --wa:#45c385; --ok:#7cc79f; color-scheme:dark}
*{box-sizing:border-box}[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--body);margin:0}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--plum)}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.12;margin:0;text-wrap:balance}
.eyebrow{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--gold-ink)}
.lede{color:var(--muted);max-width:60ch;margin:10px 0 0}
section{padding-block:72px}
.sh{display:flex;justify-content:space-between;align-items:flex-end;gap:16px 32px;flex-wrap:wrap;margin-bottom:28px}
.sh h2{font-size:clamp(2rem,4.2vw,2.9rem)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:999px;font:700 .95rem var(--body);text-decoration:none;border:1.5px solid transparent;cursor:pointer;white-space:nowrap}
.btn.gold{background:var(--gold);color:var(--plum)}
.btn.ghost{border-color:var(--gold);color:var(--parchment);background:transparent}
.btn.ink{background:var(--ink);color:var(--bg)}
.btn.line{border-color:var(--ink);color:var(--ink);background:transparent}
.wa-ico{width:18px;height:18px;flex:none}
/* header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:6;background:var(--plum);color:var(--parchment);border-bottom:1px solid rgba(212,175,55,.25)}
.bar{display:flex;align-items:center;gap:18px;padding-block:10px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:1.5px solid var(--gold)}
.brand b{font:600 1.25rem var(--display);letter-spacing:.01em}
nav{display:flex;gap:6px 22px;margin-left:auto;font-size:.93rem;flex-wrap:wrap}
nav a{text-decoration:none;opacity:.85}nav a:hover{opacity:1;color:var(--gold)}
.bar .btn{padding:9px 16px;font-size:.88rem}
@media (max-width:900px){nav{display:none}.bar .btn{margin-left:auto}}
@media (max-width:420px){.brand b{font-size:1.05rem}.bar .btn span{display:none}}
/* hero */
.hero{background:radial-gradient(120% 90% at 80% 20%,#3b2541 0%,var(--plum) 45%,var(--plum-deep) 100%);color:var(--parchment);overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-block:56px 64px}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);font-weight:600}
.hero h1 em{color:var(--gold);font-style:italic;font-weight:500}
.hero p{color:#dccfdc;max-width:48ch;margin:20px 0 0;font-size:1.06rem}
.hero .eyebrow{color:var(--gold)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-art{position:relative}
.hero-art img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.perks{display:flex;gap:10px 26px;flex-wrap:wrap;margin-top:30px;font-size:.88rem;color:#dccfdc}
.perks span::before{content:"✦";color:var(--gold);margin-right:8px}
/* categories */
.cats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.cat{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:3/4;text-decoration:none;color:#fff;background:var(--plum)}
.cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.cat:hover img{transform:scale(1.05)}
.cat::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(28,18,32,0) 40%,rgba(28,18,32,.92))}
.cat div{position:absolute;left:14px;right:14px;bottom:14px;z-index:1}
.cat h3{font-size:1.3rem;color:#fff}
.cat small{color:var(--gold);font-weight:700;font-size:.85rem}
@media (max-width:900px){.cats{grid-template-columns:repeat(3,minmax(0,1fr))}.cat:first-child{grid-column:span 3;aspect-ratio:16/7}}
@media (max-width:520px){.cats{grid-template-columns:repeat(2,minmax(0,1fr))}.cat:first-child{grid-column:span 2}}
/* treasures */
.band{background:var(--paper);border-block:1px solid var(--line)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--chip);color:var(--ink);padding:7px 14px;border-radius:999px;font:500 .88rem var(--body);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:22px}
.prod{display:flex;flex-direction:column;gap:10px}
.prod .ph{aspect-ratio:1;border-radius:14px;overflow:hidden;background:var(--plum)}
.prod .ph img{width:100%;height:100%;object-fit:cover}
.prod h3{font-size:1.12rem}
.prod p{margin:0;color:var(--muted);font-size:.9rem}
.row{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-top:auto}
.price{font:700 1.3rem var(--display);font-variant-numeric:tabular-nums}
.wa{color:var(--wa);font-weight:700;font-size:.9rem;text-decoration:none;border-bottom:1.5px solid currentColor}
.pk{display:flex;justify-content:space-between;align-items:center;gap:8px}.sku{font:700 .72rem var(--body);letter-spacing:.06em;padding:3px 7px;border-radius:5px;background:var(--chip);color:var(--ink)}
.prod .ph{background:#fff}
.tag{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gold-ink)}
/* delivery band */
.ribbon{background:var(--gold);color:var(--plum)}
.ribbon .wrap{display:flex;gap:10px 30px;justify-content:center;flex-wrap:wrap;padding-block:14px;font-weight:700;font-size:.95rem;text-align:center}
/* bundles */
.bundles{display:grid;align-items:start;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.bundle{background:var(--plum);color:var(--parchment);border-radius:18px;padding:24px;display:flex;flex-direction:column;gap:12px;border:1px solid rgba(212,175,55,.3)}
.bundle .yr{color:var(--gold);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700}
.bundle h3{font-size:1.5rem;color:#fff}
.bundle .mods{font-size:.86rem;color:#cdbfce;margin:0}
.bundle ul{list-style:none;margin:4px 0 0;padding:0;display:grid;gap:6px;font-size:.9rem}
.bundle li{display:flex;justify-content:space-between;gap:12px;border-top:1px solid rgba(242,231,213,.12);padding-top:6px}
.bundle li span:first-child{min-width:0}
.bundle li span:last-child{color:var(--gold);white-space:nowrap;font-variant-numeric:tabular-nums}
.bundle .tot{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid rgba(212,175,55,.4)}
.bundle .tot b{font:700 1.5rem var(--display);color:#fff}
.bundle .tot small{color:#cdbfce;display:block;font-size:.8rem}
.bundle .btn{align-self:flex-start}
/* textbooks */
.tools{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;margin-bottom:14px}
.search{width:100%;padding:14px 18px;border:1.5px solid var(--line);background:var(--paper);color:var(--ink);border-radius:12px;font:500 1rem var(--body)}
.search:focus{border-color:var(--gold);outline:none}
.count{color:var(--muted);font-size:.9rem;font-variant-numeric:tabular-nums}
.shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:26px 20px;margin-top:22px}
.book{display:flex;flex-direction:column;gap:8px;min-width:0}
.cover{aspect-ratio:2/3;border-radius:4px 10px 10px 4px;padding:16px 14px 14px 20px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;color:var(--parchment);box-shadow:0 10px 24px rgba(28,18,32,.25),inset 6px 0 0 rgba(0,0,0,.25)}
.cover::before{content:"";position:absolute;left:10px;top:0;bottom:0;width:1px;background:rgba(212,175,55,.5)}
.cover .ct{font:600 1.02rem/1.2 var(--display);color:#fff;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.cover .ca{font-size:.75rem;color:rgba(242,231,213,.8);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cover .cp{font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);font-weight:700}
.cover .orn{width:38px;height:1px;background:var(--gold);margin:10px 0;position:relative}
.c0{background:linear-gradient(160deg,#3a2541,#2A1B2E)}.c1{background:linear-gradient(160deg,#2c2a31,#1A1A1A)}.c2{background:linear-gradient(160deg,#4a3046,#33203a)}.c3{background:linear-gradient(160deg,#5a4512,#3d2f0c)}
.realcover{aspect-ratio:2/3;border-radius:4px 8px 8px 4px;overflow:hidden;background:var(--chip);box-shadow:0 10px 24px rgba(28,18,32,.22);display:flex;align-items:center;justify-content:center}.realcover img{width:100%;height:100%;object-fit:cover}
.strip{display:flex;gap:8px;flex-wrap:wrap}.strip img{width:46px;height:68px;object-fit:cover;border-radius:3px;box-shadow:0 4px 10px rgba(0,0,0,.35)}
.book .bt{font-weight:700;font-size:.95rem;line-height:1.3}
.book .bm{color:var(--muted);font-size:.8rem;line-height:1.4}
.codes{display:flex;flex-wrap:wrap;gap:4px}
.code{font:700 .68rem/1 var(--body);padding:4px 6px;border-radius:4px;background:var(--chip);letter-spacing:.03em}
.bp{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.bp .price{font-size:1.15rem}
.rrp{font-size:.76rem;color:var(--muted)}
.ask{font-size:.85rem;color:var(--muted)}
.free{font-size:.82rem;color:var(--ok)}
.more{margin:30px auto 0;display:flex}
.empty{padding:30px 0;color:var(--muted);grid-column:1/-1}
.note{font-size:.85rem;color:var(--muted);margin-top:22px;max-width:80ch}
/* about */
.about{background:var(--plum);color:var(--parchment)}
.about .eyebrow{color:var(--gold)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about h2{font-size:clamp(2rem,4vw,2.8rem);color:#fff}
.about p{color:#dccfdc}
.mosaic{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mosaic img{width:100%;height:100%;object-fit:cover;border-radius:12px;aspect-ratio:1}
.mosaic img:first-child{grid-column:span 2;aspect-ratio:16/10}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:26px}
.fact{border:1px solid rgba(212,175,55,.35);border-radius:12px;padding:14px}
.fact b{display:block;font:600 1.05rem var(--display);color:#fff}
.fact span{font-size:.82rem;color:#cdbfce}
.what{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 22px;margin-top:22px}
.what div{border-top:1px solid rgba(212,175,55,.35);padding-top:10px}
.what b{color:var(--gold);font-weight:700;display:block}
.what span{font-size:.9rem;color:#dccfdc}
/* bulk + find */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:30px}
.panel h2{font-size:2rem}
.panel ul{padding-left:18px;margin:14px 0;color:var(--muted)}
.places{display:grid;gap:0;margin-top:14px}
.place{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:14px 0;border-top:1px solid var(--line)}
.place b{font-family:var(--display);font-size:1.12rem}
.place span{color:var(--muted)}
footer{background:var(--plum-deep);color:#cdbfce;padding-block:44px}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer .tagline{font:500 italic 1.4rem var(--display);color:var(--gold)}
footer .contact{display:grid;gap:6px;font-variant-numeric:tabular-nums}
footer .contact span{user-select:all;color:var(--parchment)}
@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;padding-block:36px 48px}
  .hero-art{max-width:420px}
  .about-grid,.split{grid-template-columns:1fr}
}
@media (max-width:560px){
  section{padding-block:52px}
  .facts{grid-template-columns:1fr}
  .what{grid-template-columns:1fr}
  .tools{grid-template-columns:1fr}
  .shelf{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 14px}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .place{grid-template-columns:1fr;gap:2px}
  .cover{padding:12px 10px 10px 16px}.cover .ct{font-size:.9rem}
}

/* app shell + new pages */
.page{min-height:60vh}
.crumbs{font-size:.85rem;color:var(--muted);display:flex;gap:6px;flex-wrap:wrap;padding-top:22px}
.crumbs a{color:var(--muted)}
.cartbtn{position:relative;display:inline-flex;align-items:center;gap:6px;color:var(--parchment);text-decoration:none;font-weight:700;font-size:.9rem;padding:8px 12px;border:1.5px solid rgba(212,175,55,.6);border-radius:999px}
.cartbtn b{background:var(--gold);color:var(--plum);border-radius:999px;min-width:20px;height:20px;display:inline-grid;place-items:center;font-size:.75rem;padding:0 6px}
nav a[aria-current="page"]{color:var(--gold);opacity:1}
.prod h3 a,.book .bt a{text-decoration:none}
.prod h3 a:hover,.book .bt a:hover{text-decoration:underline}
.prod .ph a{display:block;height:100%}
.stock{font-size:.78rem;font-weight:700;color:var(--ok)}
.stock.out{color:#b3412e}
/* detail */
.detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;padding-block:28px 64px;align-items:start}
.detail .big{border-radius:18px;overflow:hidden;background:#fff;aspect-ratio:1;box-shadow:0 20px 50px rgba(28,18,32,.15)}
.detail .big img{width:100%;height:100%;object-fit:cover}
.detail .bigcover{max-width:340px;aspect-ratio:2/3;border-radius:6px 14px 14px 6px;overflow:hidden;box-shadow:0 24px 60px rgba(28,18,32,.3);margin-inline:auto}
.detail .bigcover img{width:100%;height:100%;object-fit:cover}
.detail .bigcover .cover{height:100%;aspect-ratio:auto}
.detail h1{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.detail .sku{margin-left:0}
.dl{display:grid;grid-template-columns:140px 1fr;gap:8px 16px;margin:22px 0;font-size:.93rem}
.dl dt{color:var(--muted)}
.dl dd{margin:0}
.buybox{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px;display:grid;gap:14px;margin-top:20px}
.buybox .price{font-size:2rem}
.qty{display:inline-flex;align-items:center;border:1.5px solid var(--line);border-radius:999px;overflow:hidden}
.qty button{width:38px;height:38px;border:0;background:var(--chip);color:var(--ink);font-size:1.1rem;cursor:pointer}
.qty span{min-width:40px;text-align:center;font-weight:700;font-variant-numeric:tabular-nums}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.note2{font-size:.85rem;color:var(--muted)}
.flag{font-size:.82rem;background:var(--chip);border-radius:10px;padding:10px 12px;color:var(--ink)}
/* subjects */
.subjects{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.subj{display:flex;flex-direction:column;gap:12px;padding:18px;border-radius:16px;background:var(--paper);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.subj:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(28,18,32,.12)}
.subj .fan{display:flex;height:96px;align-items:flex-end}
.subj .fan img,.subj .fan i{width:62px;height:92px;object-fit:cover;border-radius:3px;box-shadow:0 6px 14px rgba(28,18,32,.3);margin-right:-22px;background:var(--plum)}
.subj .fan img:nth-child(2){transform:rotate(-4deg) translateY(-2px)}.subj .fan img:nth-child(3){transform:rotate(5deg)}
.subj h3{font-size:1.2rem}
.subj small{color:var(--muted)}
/* bundles builder */
.bb{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;padding-block:20px 64px;align-items:start}
.steps{position:sticky;top:calc(env(safe-area-inset-top,0px) + 80px);display:grid;gap:18px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}
.step .num{font:700 .72rem var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-ink)}
.step h3{font-size:1.15rem;margin:4px 0 12px}
.opts{display:grid;gap:8px}
.opt{display:flex;justify-content:space-between;align-items:center;gap:10px;text-align:left;padding:10px 12px;border-radius:10px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);font:500 .92rem var(--body);cursor:pointer}
.opt[aria-pressed="true"]{border-color:var(--plum);background:var(--plum);color:var(--parchment)}
.opt small{opacity:.7}
.shelfstage{background:linear-gradient(180deg,var(--plum) 0%,var(--plum-deep) 100%);border-radius:22px;padding:28px 28px 0;color:var(--parchment);overflow:hidden}
.shelfstage h2{color:#fff;font-size:clamp(1.6rem,3vw,2.2rem)}
.shelfstage .mods{color:#cdbfce;margin:6px 0 0;font-size:.92rem}
.spines{display:flex;align-items:flex-end;gap:10px;min-height:230px;padding:26px 6px 0;overflow-x:auto;border-bottom:14px solid #5a3e1e;box-shadow:inset 0 -2px 0 #8a6a36}
.bk{flex:none;width:118px;cursor:pointer;background:none;border:0;padding:0;position:relative;transition:transform .25s,opacity .25s,filter .25s}
.bk img,.bk .cover{width:118px;height:177px;object-fit:cover;border-radius:3px 8px 8px 3px;box-shadow:0 12px 24px rgba(0,0,0,.45);display:block}
.bk .cover{padding:10px 8px 8px 14px}.bk .cover .ct{font-size:.72rem}.bk .cover .ca,.bk .cover .cp{display:none}
.bk.off{opacity:.35;filter:grayscale(1);transform:translateY(16px)}
.bk .tick{position:absolute;top:-10px;right:-8px;width:26px;height:26px;border-radius:50%;background:var(--gold);color:var(--plum);display:grid;place-items:center;font-weight:700;font-size:.85rem;box-shadow:0 4px 10px rgba(0,0,0,.35)}
.bk.off .tick{background:#6c5d6f;color:#fff}
.blist{background:var(--paper);border:1px solid var(--line);border-top:0;border-radius:0 0 22px 22px;padding:18px 24px 24px}
.brow{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);font-size:.93rem}
.brow input{width:18px;height:18px;accent-color:var(--plum)}
.brow small{display:block;color:var(--muted)}
.brow .pr{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.totals{display:grid;gap:6px;margin-top:16px;font-variant-numeric:tabular-nums}
.totals div{display:flex;justify-content:space-between;gap:12px}
.totals .grand{font:700 1.4rem var(--display);border-top:2px solid var(--ink);padding-top:10px;margin-top:4px}
.save{color:var(--ok);font-weight:700}
/* cart + checkout */
.cartgrid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;padding-block:20px 64px;align-items:start}
.cline{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.cline img{width:72px;height:72px;object-fit:cover;border-radius:10px;background:#fff}
.cline .lc{width:72px;height:104px}
.cline .lc img{height:104px}
.summary{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px;position:sticky;top:calc(env(safe-area-inset-top,0px) + 80px)}
.summary h3{margin-bottom:12px}
.linkbtn{background:none;border:0;color:var(--muted);text-decoration:underline;cursor:pointer;font:500 .82rem var(--body);padding:0}
form.co{display:grid;gap:22px}
fieldset{border:1px solid var(--line);border-radius:16px;padding:18px 18px 20px;margin:0;display:grid;gap:14px;grid-template-columns:1fr 1fr;background:var(--paper)}
legend{font:600 1.15rem var(--display);padding:0 6px}
.f{display:grid;gap:6px;min-width:0}
.f.full{grid-column:1/-1}
.f label{font-size:.85rem;font-weight:700}
.f input,.f select,.f textarea{padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:500 .95rem var(--body);width:100%}
.f input:focus,.f select:focus,.f textarea:focus{border-color:var(--gold);outline:none}
.f .err{color:#b3412e;font-size:.8rem;min-height:0}
.radios{display:grid;gap:8px}
.radio{display:flex;gap:10px;align-items:flex-start;padding:12px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);cursor:pointer}
.radio input{margin-top:3px;accent-color:var(--plum)}
.radio b{display:block}
.radio small{color:var(--muted)}
.done{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:28px;display:grid;gap:14px}
.ref{font:700 1.6rem var(--display);letter-spacing:.04em}
.copyrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.copyrow code{background:var(--chip);padding:6px 10px;border-radius:8px;user-select:all;font-size:.9rem}
/* modal */
.modal{position:fixed;inset:0;z-index:30;background:rgba(20,12,24,.6);display:grid;place-items:center;padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.sheet{background:var(--bg);color:var(--ink);border-radius:20px;max-width:560px;width:100%;max-height:100%;overflow:auto;padding:24px;display:grid;gap:16px;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.sheet h2{font-size:1.6rem}
.sheet .x{justify-self:end;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--ink);line-height:1}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:999px;font-weight:700;z-index:40;font-size:.9rem}
.homefeat{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:18px}
@media (max-width:900px){.detail,.bb,.cartgrid{grid-template-columns:1fr}.steps,.summary{position:static}fieldset{grid-template-columns:1fr}}
@media (max-width:560px){.dl{grid-template-columns:1fr;gap:2px 0}.dl dd{margin-bottom:8px}.bk,.bk img,.bk .cover{width:92px}.bk img,.bk .cover{height:138px}}
.radio input{width:auto;flex:none;padding:0}
.err{color:#b3412e;font-size:.8rem}

@media (max-width:900px){.bar{flex-wrap:wrap}nav{display:flex;order:3;width:100%;overflow-x:auto;flex-wrap:nowrap;gap:18px;padding:4px 0 10px;scrollbar-width:none}nav a{white-space:nowrap}}
.hsearch{display:flex;gap:8px;margin:18px 0 6px}
.hsearch input{flex:1;min-width:0}
.stbl{width:100%;border-collapse:collapse;font-size:.92rem;margin-top:14px}
.stbl th,.stbl td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.stbl th{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.stbl td.n{white-space:nowrap;font-variant-numeric:tabular-nums;font-weight:700}
.stbl .wa{white-space:nowrap}
.sergrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:18px}
.serc{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px}
.serc img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff;border-radius:8px}
.serc .ph{width:100%;aspect-ratio:4/3;border-radius:8px;background:linear-gradient(135deg,var(--plum),#4a3050);display:grid;place-items:center;color:var(--gold);font:600 1rem var(--display);padding:12px;text-align:center}
.serc b{font-size:.95rem;line-height:1.3}
.serc small{color:var(--muted)}
.badge{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.04em;padding:3px 8px;border-radius:999px;background:var(--gold);color:var(--plum)}
.badge.alt{background:var(--chip);color:var(--ink)}
.lead{font-size:.82rem;color:var(--muted)}
.prose{max-width:70ch;line-height:1.7}
@media (max-width:640px){.stbl .hide{display:none}}