:root{
  --ground:#EEE5D0; --paper:#F6EFDF; --deep:#E4D7B8; --line:#CDBD98;
  --moss:#243C2F; --moss-2:#2F4A3B; --moss-ink:#EFE6CF; --moss-muted:#B9B196;
  --gold:#94702C; --gold-hi:#E9D18E; --gold-mid:#B8964F;
  --amber:#7A461C; --ink:#1D241F; --muted:#5C5846;
  --grain-op:.22;
  --roman:"Cinzel","Cormorant SC",Georgia,serif;
  --display:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --caps:"Cormorant SC","Cormorant Garamond",Georgia,serif;
  --hand:"Dancing Script","Cormorant Garamond",cursive;
  --body:"Be Vietnam Pro","Segoe UI",system-ui,sans-serif;
  --foil:linear-gradient(100deg,#8B6A28 0%,#E9D18E 28%,#B08A3E 46%,#F3E0A6 64%,#9C7A33 82%,#D9BC72 100%);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#111913; --paper:#17211B; --deep:#1E2A22; --line:#33443A;
    --moss:#15251C; --moss-2:#1D3025; --moss-ink:#EAE0C9; --moss-muted:#A69F88;
    --gold:#CDA85C; --gold-mid:#B8964F;
    --amber:#C27A3A; --ink:#EAE0C9; --muted:#ACA48C; --grain-op:.10;
  }
}
:root[data-theme="dark"]{
  --ground:#111913; --paper:#17211B; --deep:#1E2A22; --line:#33443A;
  --moss:#15251C; --moss-2:#1D3025; --moss-ink:#EAE0C9; --moss-muted:#A69F88;
  --gold:#CDA85C; --gold-mid:#B8964F;
  --amber:#C27A3A; --ink:#EAE0C9; --muted:#ACA48C; --grain-op:.10;
}
/* bộ nhận diện: ảnh logo tách nền, tô màu bằng mask */
.mk{display:block;-webkit-mask:var(--m) center/contain no-repeat;mask:var(--m) center/contain no-repeat}
.mk-foil{background:var(--foil)}
.mk-ink{background:var(--ink)}
.crest .mono{--m:url(/img/monogram.png);width:46px;height:49px;flex:none}
.crest .logo{--m:url(/img/logo-chu.png);width:196px;height:84px}
.foot-top .seal{--m:url(/img/con-dau.png);width:170px;height:171px}
.story-art{--m:url(/img/hu-men.png);width:min(300px,80%);aspect-ratio:700/662;margin:30px 0 0;opacity:.85}
footer{background:linear-gradient(rgba(21,37,28,.9),rgba(21,37,28,.93)),url(/img/hoa-van.jpg) center/360px repeat}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);font:400 16px/1.7 var(--body);position:relative}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:50;opacity:var(--grain-op);mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .32  0 0 0 0 .25  0 0 0 0 .12  0 0 0 .55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
img{display:block;max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 36px}
p{margin:0}
h1,h2,h3{margin:0;font-family:var(--display);font-weight:600;text-wrap:balance;color:var(--ink)}
h2{font-size:clamp(36px,4.4vw,54px);line-height:1.05}
h2 em{font-style:italic;font-weight:500;color:var(--gold)}
h3{font-size:26px;line-height:1.15}
.eyebrow{display:inline-block;font:600 22px/1.1 var(--hand);color:var(--gold)}
.foil{background:var(--foil);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 24px;font:500 14px/1 var(--body);letter-spacing:.05em;text-decoration:none;border:1px solid currentColor;transition:background .25s,color .25s,border-color .25s}
.btn-gold{background:var(--gold-mid);border-color:var(--gold-mid);color:#17211B}
.btn-gold:hover{background:var(--gold-hi);border-color:var(--gold-hi)}
.btn-line{color:var(--moss-ink);border-color:rgba(233,209,142,.55)}
.btn-line:hover{border-color:var(--gold-hi);color:var(--gold-hi)}
.btn-ink{color:var(--ink);border-color:var(--line)}
.btn-ink:hover{border-color:var(--gold);color:var(--gold)}

/* fleuron divider */
.fleuron{display:flex;align-items:center;gap:14px;color:var(--gold);justify-content:center}
.fleuron::before,.fleuron::after{content:"";height:1px;flex:1;max-width:180px;background:currentColor;opacity:.6}
.fleuron svg{width:58px;height:16px;flex:none}

/* ---------- ribbon + header ---------- */
.ribbon{background:var(--moss);color:var(--moss-muted);text-align:center;font:500 12px/1 var(--body);letter-spacing:.14em;padding:10px 16px;text-transform:uppercase}
.ribbon b{color:var(--gold-hi);font-weight:500}
header{background:var(--ground);border-bottom:1px solid var(--line);position:relative;z-index:5}
.bar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;max-width:1200px;margin:0 auto;padding:16px 36px}
.nav{display:flex;gap:28px;list-style:none;margin:0;padding:0;font-size:14px}
.nav a{text-decoration:none;color:var(--muted);position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--gold);transform:scaleX(0);transition:transform .3s}
.nav a:hover{color:var(--ink)}.nav a:hover::after{transform:scaleX(1)}
.nav-r{justify-content:flex-end;align-items:center}
.mnav{display:none}
.crest{display:flex;align-items:center;gap:14px;text-decoration:none}
.crest svg{width:50px;height:50px;flex:none}
.crest .wm{display:flex;flex-direction:column;align-items:center;line-height:1}
.crest small{font:600 10px/1 var(--roman);letter-spacing:.55em;color:var(--gold);padding-left:.55em}
.crest b{font:600 27px/1 var(--roman);letter-spacing:.2em;color:var(--ink);margin-top:5px;padding-left:.2em}

/* ---------- hero ---------- */
.hero{background:var(--moss);color:var(--moss-ink);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 60% 70% at 78% 45%,rgba(233,209,142,.13),transparent 70%),radial-gradient(ellipse 50% 60% at 10% 100%,rgba(122,70,28,.25),transparent 70%)}
.hero-in{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;max-width:1200px;margin:0 auto;padding:78px 36px 92px}
.hero .eyebrow{color:var(--gold-hi)}
.hero h1{font-size:clamp(50px,6.4vw,92px);line-height:.98;letter-spacing:-.012em;color:var(--moss-ink);margin:22px 0 26px}
.hero h1 .foil{font-style:italic;font-weight:500;display:inline-block;padding-right:.06em}
.hero .lede{max-width:31em;font-size:17px;color:var(--moss-muted)}
.hero-fr{font:italic 500 25px/1.2 var(--display);color:var(--gold-hi);margin:-8px 0 18px}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-sign{margin-top:44px;display:flex;align-items:center;gap:16px;color:var(--moss-muted);font:italic 500 18px/1.3 var(--display)}
.hero-sign::before{content:"";width:46px;height:1px;background:var(--gold-mid)}

.arch{position:relative;justify-self:center;width:min(100%,470px)}
.arch-frame{position:relative;aspect-ratio:4/5;border-radius:999px 999px 4px 4px;overflow:hidden;box-shadow:0 40px 80px -40px rgba(0,0,0,.7)}
.arch-frame img{width:100%;height:100%;object-fit:cover;object-position:52% 50%;animation:settle 2.6s cubic-bezier(.2,.7,.2,1) both}
@keyframes settle{from{transform:scale(1.08)}to{transform:scale(1)}}
.arch::before{content:"";position:absolute;inset:-14px;border:1px solid rgba(233,209,142,.55);border-radius:999px 999px 6px 6px;pointer-events:none}
.arch::after{content:"";position:absolute;inset:-22px;border:1px solid rgba(233,209,142,.22);border-radius:999px 999px 8px 8px;pointer-events:none}
.keystone{position:absolute;top:-40px;left:50%;transform:translateX(-50%);width:44px;height:44px;z-index:2}

.label{position:absolute;left:-58px;bottom:36px;width:236px;background:#F4ECDA;color:#1D241F;padding:9px;box-shadow:0 26px 50px -24px rgba(0,0,0,.65);z-index:3;transform:rotate(-2.2deg)}
.label-in{border:1px solid #A9843A;outline:1px solid #A9843A;outline-offset:-5px;padding:15px 15px 13px}
.label .lt{display:block;text-align:center;font:600 17px/1 var(--hand);color:#94702C}
.label h4{margin:7px 0 10px;text-align:center;font:600 21px/1.12 var(--display);color:#1D241F}
.label h4 span{display:block;font:italic 500 15px/1.3 var(--display);color:#5C5846;margin-top:2px}
.label dl{display:grid;grid-template-columns:auto 1fr;gap:3px 10px;margin:0;font-size:12px;font-variant-numeric:tabular-nums;border-top:1px solid #CDBD98;padding-top:9px}
.label dt{color:#5C5846;font:600 15px/1.6 var(--hand)}
.label dd{margin:0;text-align:right}
.label .note{margin-top:9px;padding-top:7px;border-top:1px dashed #CDBD98;font:500 16px/1.35 var(--hand);color:#5C5846;text-align:center}

/* ---------- facts strip ---------- */
.facts{border-bottom:1px solid var(--line);background:var(--paper)}
.facts ul{list-style:none;margin:0 auto;padding:0 36px;max-width:1200px;display:grid;grid-template-columns:repeat(4,1fr)}
.facts li{padding:28px 20px;text-align:center;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.facts li:last-child{border-right:0}
.facts b{font:600 40px/1 var(--display);color:var(--ink);font-variant-numeric:lining-nums tabular-nums}
.facts b small{font-size:.5em;color:var(--gold);margin-left:3px}
.facts b small:empty{display:none}
.facts span{font-size:13px;color:var(--muted)}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;border-bottom:1px solid var(--line);padding:16px 0;background:var(--ground)}
.marquee-track{display:flex;gap:0;width:max-content;animation:slide 48s linear infinite}
.marquee span{font:italic 500 26px/1 var(--display);color:var(--ink);white-space:nowrap;display:flex;align-items:center}
.marquee span::after{content:"✦";font-style:normal;font-size:13px;color:var(--gold);margin:0 30px}
@keyframes slide{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion: reduce){.marquee-track,.arch-frame img,.bubble{animation:none}}

/* ---------- section head ---------- */
.sec{padding:96px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px;display:flex;flex-direction:column;align-items:center;gap:16px}
.sec-head p{color:var(--muted);max-width:36em}

/* ---------- collection niches ---------- */
.niches{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.niche{display:flex;flex-direction:column}
.alcove{position:relative;aspect-ratio:5/6;border-radius:999px 999px 0 0;background:linear-gradient(180deg,var(--deep),var(--paper) 78%);display:flex;align-items:flex-end;justify-content:center;gap:10px;padding:0 20px 0;overflow:hidden;border:1px solid var(--line);border-bottom:0}
.alcove::before{content:"";position:absolute;inset:12px 12px 0;border:1px solid var(--gold);border-bottom:0;border-radius:999px 999px 0 0;opacity:.55}
.alcove img.prod{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transition:transform .6s cubic-bezier(.2,.7,.2,1)}.niche:hover .alcove img.prod{transform:scale(1.03)}.alcove::before{z-index:2}
.alcove .shelf{position:absolute;left:0;right:0;bottom:0;height:22px;background:linear-gradient(180deg,#B28A55,#8E6638);border-top:1px solid #C9A46A}
.alcove svg{position:relative;z-index:1;margin-bottom:22px;filter:drop-shadow(0 18px 14px rgba(29,36,31,.28));transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.niche:hover .alcove svg{transform:translateY(-6px)}
.alcove .s-tall{height:72%}.alcove .s-mid{height:62%}.alcove .s-flat{height:50%}.alcove .s-small{height:40%}
.niche-body{border:1px solid var(--line);border-top:2px solid var(--gold);background:var(--paper);padding:22px 24px 10px;flex:1;display:flex;flex-direction:column;gap:8px}
.niche-body .kind{font:600 19px/1 var(--hand);color:var(--gold)}
.niche-body .pack{font-size:13px;color:var(--muted)}
.bubble{fill:rgba(255,238,200,.6);animation:rise 5.5s linear infinite}
@keyframes rise{from{transform:translateY(0);opacity:0}15%{opacity:.9}to{transform:translateY(-110px);opacity:0}}
.list{list-style:none;margin:8px 0 0;padding:0}
.list li{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:baseline;padding:10px 0;border-top:1px dotted var(--line)}
.en{font:italic 600 19px/1.2 var(--display)}
.vi{display:block;font-size:12.5px;color:var(--muted)}
.price{font:500 14px/1 var(--body);font-variant-numeric:tabular-nums;white-space:nowrap}
.soon{font:600 15px/1 var(--hand);color:var(--amber);border:1px solid var(--amber);padding:5px 8px}
.warn{font-size:12.5px;color:var(--muted);font-style:italic;padding:10px 0 6px;border-top:1px dotted var(--line)}

/* ---------- herbier ---------- */
.herbier{border-top:1px solid var(--line)}
.herbs{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--line)}
.herb{padding:24px 22px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:4px;transition:background .3s}
.herb:hover{background:var(--paper)}
.herb .n{font:500 12px/1 var(--roman);letter-spacing:.14em;color:var(--gold)}
.herb .fr{font:600 27px/1.1 var(--display);color:var(--ink);margin-top:10px}
.herb .vn{font:italic 500 16px/1.3 var(--display);color:var(--gold)}
.herb .vn::before{content:"("}.herb .vn::after{content:")"}
.herb p{font-size:13.5px;color:var(--muted);margin-top:8px}
@media (max-width:1020px){.herbs{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.herb{padding:18px 14px 20px}.herb .fr{font-size:23px}}

/* ---------- gallery ---------- */
.visit{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.gallery{display:grid;grid-template-columns:1.1fr 1fr 1fr 1.1fr;gap:22px;align-items:end}
.gallery figure{margin:0;display:flex;flex-direction:column;gap:12px}
.gallery .ph{overflow:hidden;border:1px solid var(--line);padding:7px;background:var(--ground)}
.gallery .ph img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.gallery figure:hover img{transform:scale(1.04)}
.gallery .tall .ph{aspect-ratio:3/4.4;border-radius:999px 999px 0 0}
.gallery .tall .ph img{border-radius:999px 999px 0 0}
.gallery .sq .ph{aspect-ratio:1/1}
.gallery figcaption{font:italic 500 19px/1.3 var(--display);color:var(--gold);text-align:center}
.gallery figcaption span{display:block;font:400 12.5px/1.5 var(--body);font-style:normal;color:var(--muted);margin-top:2px}
.render-note{text-align:center;margin-top:28px;font-size:12.5px;color:var(--muted)}

/* ---------- world ---------- */
.world-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.world .intro p{color:var(--muted);margin-top:20px;max-width:30em}
.dropcap::first-letter{float:left;font:600 76px/.8 var(--display);color:var(--gold);padding:8px 12px 0 0}
.index{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.index li{border-bottom:1px solid var(--line)}
.index a{display:grid;grid-template-columns:auto 1fr auto;gap:6px 22px;align-items:baseline;padding:18px 0;text-decoration:none}
.index .no{font:500 15px/1 var(--roman);color:var(--gold);letter-spacing:.08em;min-width:30px}
.index .t{font:600 22px/1.28 var(--display);color:var(--ink);transition:color .25s}
.index a:hover .t{color:var(--gold)}
.index .tag{font:600 18px/1 var(--hand);color:var(--gold);white-space:nowrap}
.index .meta{grid-column:2/-1;font-size:13.5px;color:var(--muted)}

/* ---------- workshop ---------- */
.workshop{background:var(--moss);color:var(--moss-ink);position:relative;overflow:hidden}
.workshop::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 50% 60% at 20% 40%,rgba(233,209,142,.10),transparent 70%)}
.ws-grid{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}
.ws-photo{position:relative;justify-self:center;width:min(100%,440px)}
.ws-photo .frame{aspect-ratio:4/5;border-radius:999px 999px 4px 4px;overflow:hidden}
.ws-photo .frame img{width:100%;height:100%;object-fit:cover;object-position:40% 50%}
.ws-photo::before{content:"";position:absolute;inset:-14px;border:1px solid rgba(233,209,142,.5);border-radius:999px 999px 6px 6px}
.workshop h2{color:var(--moss-ink)}
.workshop .eyebrow{color:var(--gold-hi)}
.workshop .lede{color:var(--moss-muted);margin-top:18px;max-width:32em}
.ws-quote{font:italic 500 34px/1.2 var(--display);margin:22px 0 28px}
.classes{list-style:none;margin:0 0 32px;padding:0;border-top:1px solid rgba(233,209,142,.3)}
.classes li{display:grid;grid-template-columns:1fr auto;gap:4px 18px;padding:16px 0;border-bottom:1px solid rgba(233,209,142,.18)}
.classes b{font:600 23px/1.2 var(--display);color:var(--moss-ink)}
.classes .d{font:500 13px/1.6 var(--body);color:var(--gold-hi);text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.classes p{grid-column:1/-1;font-size:14px;color:var(--moss-muted)}

/* ---------- story ---------- */
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.story p{color:var(--muted);max-width:32em}
.story p+p{margin-top:14px}
.ledger{border:1px solid var(--line);background:var(--paper);padding:30px;position:relative}
.ledger::before{content:"";position:absolute;inset:6px;border:1px solid var(--line);pointer-events:none}
.ledger .eyebrow{margin-bottom:14px}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:12px;padding:13px 0;border-bottom:1px dotted var(--line);font-size:14.5px}
.steps li:last-child{border-bottom:0}
.steps li::before{content:counter(s,upper-roman);font:600 17px/1.4 var(--roman);color:var(--gold)}

/* ---------- footer ---------- */
footer{color:var(--moss-muted);padding:64px 0 40px;font-size:13.5px}
.foot-top{display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center;padding-bottom:40px;border-bottom:1px solid rgba(233,209,142,.2)}
.foot-top svg{width:120px;height:120px}
.foot-top p{margin:0}
.foot-top .slogan{font:italic 500 clamp(26px,3.2vw,38px)/1.15 var(--display);background:var(--foil);-webkit-background-clip:text;background-clip:text;color:transparent;padding:0 .1em}
.foot-top .slogan-vi{font:italic 500 19px/1.3 var(--display);color:var(--moss-ink);margin-top:-8px}
.foot-top .origin{font:500 11.5px/1.4 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--moss-muted)}
.foot{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding:32px 0}
.foot h5{margin:0 0 10px;font:600 20px/1 var(--hand);color:var(--gold-hi)}
.foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.foot a{text-decoration:none}.foot a:hover{color:var(--gold-hi)}
.fine{padding-top:18px;border-top:1px solid rgba(233,209,142,.2);font-size:12.5px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.fine .demo{color:var(--gold-hi)}

@media (max-width:1020px){
  .bar{grid-template-columns:1fr auto}
  .nav-l{display:none}
  .nav-r li:not(.keep){display:none}
  .mnav{display:flex;gap:22px;overflow-x:auto;padding:10px 20px 12px;border-top:1px solid var(--line);font-size:13.5px;scrollbar-width:none}
  .mnav a{text-decoration:none;color:var(--muted);white-space:nowrap}
  .mnav::-webkit-scrollbar{display:none}
  .hero-in,.world-grid,.ws-grid,.story-grid{grid-template-columns:1fr}
  .hero-in{gap:80px}
  .label{left:-10px}
  .niches{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .gallery{grid-template-columns:1fr 1fr}
  .facts ul{grid-template-columns:repeat(2,1fr)}
  .facts li:nth-child(2){border-right:0}
  .facts li:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .foot{grid-template-columns:1fr}
}
@media (max-width:600px){
  .wrap,.bar,.hero-in,.facts ul{padding-left:20px;padding-right:20px}
  .crest .mono{display:none}
  .crest .logo{width:150px;height:64px}
  .hide-m{display:none}
  .label{position:relative;left:auto;bottom:auto;margin:-40px auto 0;transform:rotate(-1.5deg)}
  .sec{padding:72px 0}
}

/* =====================================================================
   LẬT SÁCH — mỗi chương là một trang riêng, chuyển trang = lật giấy
   Dùng View Transitions giữa hai trang (Chrome/Edge 126+, Safari 18.2+).
   Trình duyệt chưa hỗ trợ (Firefox) vẫn chuyển trang bình thường.
   ===================================================================== */
@view-transition{navigation:auto}

/* dải băng + đầu trang đứng yên như gáy sách, chỉ phần ruột lật */
.ribbon{view-transition-name:ribbon}
header{view-transition-name:masthead}
::view-transition-group(ribbon),::view-transition-group(masthead){animation:none}
::view-transition-old(ribbon),::view-transition-old(masthead){display:none}
::view-transition-new(ribbon),::view-transition-new(masthead){animation:none}

::view-transition-group(root){animation-duration:.85s}

/* LẬT TỚI: tờ cũ xoay quanh mép trái (gáy sách), lộ trang mới nằm bên dưới */
/* (mặc định = lật tới; KHÔNG gộp selector theo hướng vào đây — trình duyệt nào
    không hiểu :active-view-transition-type sẽ bỏ nguyên khối, mất luôn hiệu ứng) */
::view-transition-old(root){
  transform-origin:left center;z-index:2;
  animation:lat-toi .85s cubic-bezier(.5,.08,.3,1) both}
::view-transition-new(root){
  z-index:1;animation:bong-duoi .85s ease both}

/* LẬT LUI: trang trước xoay từ gáy trở về, phủ lên trang đang đọc */
html:active-view-transition-type(lui)::view-transition-new(root){
  transform-origin:left center;z-index:2;
  animation:lat-lui .85s cubic-bezier(.5,.08,.3,1) both}
html:active-view-transition-type(lui)::view-transition-old(root){
  transform:none;z-index:1;animation:bong-tren .85s ease both}

@keyframes lat-toi{
  0%  {transform:perspective(2400px) rotateY(0);filter:brightness(1)}
  60% {filter:brightness(.82)}
  100%{transform:perspective(2400px) rotateY(-96deg);filter:brightness(.6)}}
@keyframes lat-lui{
  0%  {transform:perspective(2400px) rotateY(-96deg);filter:brightness(.6)}
  40% {filter:brightness(.82)}
  100%{transform:perspective(2400px) rotateY(0);filter:brightness(1)}}
/* bóng tờ giấy đổ lên trang bên dưới, nhạt dần khi tờ lật xong */
@keyframes bong-duoi{from{filter:brightness(.72)}to{filter:brightness(1)}}
@keyframes bong-tren{from{filter:brightness(1)}to{filter:brightness(.72)}}

@media (prefers-reduced-motion: reduce){
  ::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}
}
/* trình duyệt không lật được: trang mới hé vào nhẹ nhàng */
@supports not (view-transition-name:a){
  main.trang{animation:mo-trang .5s ease both}
  @keyframes mo-trang{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:none}}
}

/* ruột trang: chương ngắn vẫn đủ một trang giấy */
main.trang{min-height:62vh}
/* ⛔ chữ nhỏ tiếng Việt KHÔNG viết hoa giãn chữ (vỡ dấu) → dùng chữ viết tay/Cormorant */
.eyebrow .chuong{opacity:.8}

/* mục đang đọc trên menu */
.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]::after{transform:scaleX(1)}
.mnav a[aria-current]{color:var(--gold);font-weight:600}

/* mục lục ở trang bìa */
.toc{border-top:1px solid var(--line)}
.toc-list{max-width:860px;margin:0 auto}

/* ---------- chân trang sách: trang trước · số chương · trang sau ---------- */
.pager{border-top:1px solid var(--line);background:var(--paper)}
.pager-in{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;padding-top:26px;padding-bottom:26px}
.pager a{text-decoration:none;display:flex;flex-direction:column;gap:5px;padding:6px 0}
.pager small{font:600 18px/1 var(--hand);color:var(--gold)}
.pager b{font:600 24px/1.15 var(--display);color:var(--ink);transition:color .25s}
.pager a:hover b{color:var(--gold)}
.pg-next{text-align:right;align-items:flex-end}
.folio{display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--gold);font:italic 500 16px/1 var(--display)}
.folio svg{width:58px;height:16px}
@media (max-width:600px){
  .pager-in{grid-template-columns:1fr 1fr;gap:14px 16px}
  .folio{grid-column:1/-1;grid-row:1}
  .pager b{font-size:20px}
}

/* ---------- MEN ĐỒ trên trang bìa: nhãn "Mới" + dải giới thiệu ---------- */
.md-chip{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;padding:7px 14px 7px 7px;border:1px solid rgba(233,209,142,.5);border-radius:999px;text-decoration:none;color:var(--moss-ink);font:500 14px/1.2 var(--body);transition:border-color .25s,background .25s}
.md-chip b{background:var(--gold-mid);color:#17211B;border-radius:999px;padding:4px 10px;font:600 13px/1 var(--body)}
.md-chip:hover{border-color:var(--gold-hi);background:rgba(233,209,142,.08)}
.hero .md-chip + .eyebrow{display:block}
.md-band{background:var(--paper);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.md-band::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 45% 70% at 22% 50%,rgba(184,150,79,.16),transparent 70%)}
.md-in{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:64px;padding-bottom:64px}
.md-jars{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.md-jars img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:999px 999px 6px 6px;border:1px solid var(--line);background:var(--ground);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.md-jars img:nth-child(even){margin-top:28px}
.md-band:hover .md-jars img{transform:translateY(-4px)}
.md-copy h2{margin:12px 0 16px}
.md-copy p{color:var(--muted);max-width:32em;margin-bottom:26px}
@media (max-width:1020px){.md-in{grid-template-columns:1fr;gap:34px}}
@media (max-width:600px){.md-in{padding-top:48px;padding-bottom:52px}.md-jars{gap:8px}.md-jars img:nth-child(even){margin-top:18px}.md-chip{font-size:13px}}