/*! LU Design — Trang chi tiết dự án, giao diện Portfolio. Mọi quy tắc nằm trong .lu-pf để không ảnh hưởng header/footer. */
@font-face{font-family:Trirong;font-style:normal;font-weight:300;font-display:swap;src:url(../fonts/lu-v11/trirong-300.woff2) format("woff2")}
@font-face{font-family:Trirong;font-style:italic;font-weight:300;font-display:swap;src:url(../fonts/lu-v11/trirong-300i.woff2) format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:300 600;font-display:swap;src:url(../fonts/lu-v11/inter-var.woff2) format("woff2")}
@font-face{font-family:Tinos;font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/lu-v11/tinos-400.woff2) format("woff2")}

/* Chống xung đột với main.css của website (reset font/màu/khoảng cách) */
.lu-pf :where(div,span,figure,figcaption,h1,h2,h3,p,a,img,dl,dt,dd,nav,section,header,main,i,button){border:revert;font:revert;vertical-align:revert;color:revert;text-rendering:revert;text-transform:none;letter-spacing:normal}
.lu-pf :where(img){height:auto;max-width:100%}
.lu-pf,.lu-pf *,.lu-pf ::before,.lu-pf ::after{box-sizing:border-box}
.lu-pf :where(div,figure,figcaption,h1,h2,h3,p,dl,dt,dd,nav,section,header){margin:0;padding:0}

.lu-pf{--ink:#000;--ivory:#EDE8DF;--mute:#8E887F;--body:#C9C2B6;--line:#2B2824;--brass:#C8A96E;
  --serif:"Trirong",Georgia,serif;--text:"Times New Roman",Tinos,Times,serif;--sans:"Inter",-apple-system,"Helvetica Neue",Arial,sans-serif;
  --gut:clamp(20px,5vw,72px);--max:1400px;
  background:var(--ink);color:var(--ivory);font:400 16px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden}
.lu-pf img{display:block}
.lu-pf a{color:inherit;text-decoration:none}
.lu-pf :focus-visible{outline:2px solid var(--brass);outline-offset:3px}
.lu-pf .pf-wrap{width:100%;max-width:calc(var(--max) + 2*var(--gut));margin-inline:auto;padding-inline:var(--gut)}

/* Hero */
.lu-pf .pf-hero{position:relative;height:min(92svh,900px);min-height:540px;overflow:hidden;background:#0d0d0d}
.lu-pf .pf-hero img{width:100%;height:100%;object-fit:cover;animation:pf-settle 2.4s cubic-bezier(.2,.6,.2,1) both}
.lu-pf .pf-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.45) 0%,transparent 28%,transparent 50%,rgba(0,0,0,.85) 100%);pointer-events:none}
.lu-pf .pf-hero-copy{position:absolute;inset:auto 0 clamp(36px,7vh,72px);z-index:1}
.lu-pf .pf-crumb{font:400 13px/1.5 var(--sans);color:#d4cdc1;margin-bottom:18px}
.lu-pf .pf-crumb span{margin:0 8px;color:#7a746b}
.lu-pf .pf-hero h1{font:300 clamp(46px,8.4vw,120px)/1.12 var(--serif);letter-spacing:-.02em;color:var(--ivory);animation:pf-rise 1.2s .3s cubic-bezier(.2,.6,.2,1) both}
.lu-pf .pf-hero p{margin-top:16px;max-width:44ch;font:300 italic clamp(17px,1.6vw,21px)/1.5 var(--serif);color:#ddd6c9;animation:pf-rise 1.2s .5s cubic-bezier(.2,.6,.2,1) both}
@keyframes pf-settle{from{transform:scale(1.05)}to{transform:none}}
@keyframes pf-rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* Thông số */
.lu-pf .pf-facts{display:grid;grid-template-columns:repeat(var(--n,5),minmax(0,1fr));border-bottom:1px solid var(--line)}
.lu-pf .pf-fact{padding:28px 24px 26px;border-right:1px solid var(--line)}
.lu-pf .pf-fact:first-child{padding-left:0}
.lu-pf .pf-fact:last-child{border-right:0}
.lu-pf .pf-fact dt{font:400 13px/1.4 var(--sans);color:var(--mute)}
.lu-pf .pf-fact dd{font:300 clamp(20px,2vw,26px)/1.3 var(--serif);margin-top:6px;color:var(--ivory)}

/* Chương — nhịp thở giữa các không gian */
.lu-pf .pf-chap{padding-top:clamp(96px,13vw,190px)}
.lu-pf .pf-chap-head{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px clamp(40px,7vw,120px);align-items:start;margin-bottom:clamp(40px,5vw,72px)}
.lu-pf .pf-no{display:block;font:300 22px/1 var(--sans);color:var(--mute);font-variant-numeric:tabular-nums;padding-top:22px;position:relative;margin-bottom:28px}
.lu-pf .pf-no::before{content:"";position:absolute;top:0;left:0;width:40px;height:1px;background:#6d675e}
.lu-pf .pf-chap h2{font:300 clamp(36px,4.2vw,58px)/1.15 var(--serif);letter-spacing:-.01em;max-width:14ch;text-wrap:balance;color:var(--ivory)}
.lu-pf .pf-chap-head p{color:var(--body);font:400 clamp(17px,calc(12px + .6vw),23.5px)/1.7 var(--text);padding-top:40px}

/* Ảnh: hàng canh đều chiều cao theo tỉ lệ thật, không cắt ảnh */
.lu-pf .pf-frame{display:grid;gap:clamp(8px,1vw,14px)}
.lu-pf .pf-row{display:flex;gap:clamp(8px,1vw,14px)}
.lu-pf .pf-s{position:relative;flex:var(--ar) 1 0;min-width:0;overflow:hidden;background:#0d0d0d;cursor:zoom-in}
.lu-pf .pf-s img{width:100%;transition:transform 1s cubic-bezier(.2,.6,.2,1)}
.lu-pf .pf-s:hover img{transform:scale(1.02)}
.lu-pf .pf-s.wide img{aspect-ratio:16/9;object-fit:cover}
.lu-pf .pf-row.solo{justify-content:center}
.lu-pf .pf-row.solo .pf-s:not(.wide){flex:0 1 auto;width:min(100%,calc(var(--ar) * 78vh))}
.lu-pf .pf-s figcaption{position:absolute;inset:auto 0 0;padding:32px 18px 14px;font:400 13px/1.4 var(--sans);color:#e8e2d7;background:linear-gradient(transparent,rgba(0,0,0,.7));opacity:0;transition:opacity .3s}
.lu-pf .pf-s:hover figcaption,.lu-pf .pf-s:focus-visible figcaption{opacity:1}

/* Chương 01: chữ một bên, mặt bằng (hoặc ảnh) một bên */
.lu-pf .pf-story-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(40px,6vw,104px);align-items:center}
.lu-pf .pf-story-grid.solo{grid-template-columns:minmax(0,1fr)}
.lu-pf .pf-story-text p{font:300 clamp(21px,1.9vw,27px)/1.6 var(--serif);color:var(--ivory);margin-top:clamp(24px,3vw,40px);max-width:30em}
.lu-pf .pf-s.plan{background:#F3F0EA;padding:clamp(10px,2vw,28px)}
.lu-pf .pf-s.plan img{mix-blend-mode:multiply}
.lu-pf .pf-plan-cap{font:400 14px/1.5 var(--sans);color:var(--mute);margin-top:14px;text-align:center}

/* Khoảng ngắt điều hướng */
.lu-pf .pf-cta{margin-top:clamp(110px,14vw,200px);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:clamp(64px,9vw,120px)}
.lu-pf .pf-cta-in{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,96px);align-items:center}
.lu-pf .pf-cta h2{font:300 clamp(32px,4vw,54px)/1.1 var(--serif);color:var(--ivory)}
.lu-pf .pf-cta-in > div > p{color:var(--body);font:400 clamp(17px,1.3vw,19px)/1.7 var(--text);margin-top:16px;max-width:40ch}
.lu-pf .pf-links{display:grid;border-top:1px solid var(--line)}
.lu-pf .pf-go{display:grid;grid-template-areas:"k" "t" "d";gap:6px;padding:26px 0;border-bottom:1px solid var(--line)}
.lu-pf .pf-go-k{grid-area:k;font:400 13px/1.4 var(--sans);color:var(--mute)}
.lu-pf .pf-go-t{grid-area:t;font:300 clamp(24px,2.4vw,34px)/1.2 var(--serif);color:var(--ivory);transition:color .25s}
.lu-pf .pf-go-d{grid-area:d;display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--body);font:400 clamp(16px,1.2vw,18px)/1.5 var(--text)}
.lu-pf .pf-go-d i{font:normal 400 22px/1 var(--sans);color:var(--brass);transition:transform .3s}
.lu-pf .pf-go:hover .pf-go-t{color:var(--brass)}
.lu-pf .pf-go:hover .pf-go-d i{transform:translateX(6px)}
.lu-pf .pf-end{height:clamp(40px,6vw,80px)}

/* Xem ảnh toàn màn hình */
.pf-lb{position:fixed;inset:0;z-index:100000;background:rgba(0,0,0,.97);display:none;grid-template-rows:56px 1fr auto;font-family:"Inter",-apple-system,Arial,sans-serif}
.pf-lb.open{display:grid}
.pf-lb-top{display:flex;align-items:center;justify-content:space-between;padding:0 20px;font-size:14px;color:#8E887F;font-variant-numeric:tabular-nums}
.pf-lb button{background:none;border:0;color:#EDE8DF;cursor:pointer;padding:0;margin:0}
.pf-lb .pf-lb-close{font-size:15px;padding:10px}
.pf-lb-stage{position:relative;display:flex;align-items:center;justify-content:center;min-height:0;padding:0 64px}
.pf-lb-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}
.pf-lb .pf-lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:56px;height:56px;font:300 34px/1 Trirong,Georgia,serif}
.pf-lb .pf-lb-prev{left:6px}.pf-lb .pf-lb-next{right:6px}
.pf-lb .pf-lb-nav:hover{color:#C8A96E}
.pf-lb-cap{padding:14px 20px 22px;margin:0;text-align:center;color:#cfc8bc;font-size:14px;min-height:56px}
.pf-lb :focus-visible{outline:2px solid #C8A96E;outline-offset:3px}

@media (max-width:1024px){
  .lu-pf .pf-facts{grid-template-columns:repeat(3,minmax(0,1fr))}
  .lu-pf .pf-fact:nth-child(3n){border-right:0}
  .lu-pf .pf-fact:nth-child(3n+1){padding-left:0}
  .lu-pf .pf-fact:nth-child(n+4){border-top:1px solid var(--line)}
  .lu-pf .pf-chap-head,.lu-pf .pf-cta-in,.lu-pf .pf-story-grid{grid-template-columns:1fr}
  .lu-pf .pf-chap-head p{padding-top:0}
  .lu-pf .pf-no{margin-bottom:20px}
}
@media (max-width:760px){
  .lu-pf .pf-facts{grid-template-columns:1fr 1fr}
  .lu-pf .pf-fact,.lu-pf .pf-fact:nth-child(n){padding:22px 0;border-right:0;border-top:1px solid var(--line)}
  .lu-pf .pf-fact:nth-child(odd){border-right:1px solid var(--line);padding-right:16px}
  .lu-pf .pf-fact:nth-child(even){padding-left:18px}
  .lu-pf .pf-fact:first-child,.lu-pf .pf-fact:nth-child(2){border-top:0}
  .lu-pf .pf-chap{padding-top:88px}
  .lu-pf .pf-row{flex-direction:column}
  .lu-pf .pf-row .pf-s,.lu-pf .pf-row.solo .pf-s:not(.wide){flex:none;width:100%}
  .lu-pf .pf-s.wide img{aspect-ratio:4/3}
  .lu-pf .pf-s figcaption{opacity:1;font-size:12px}
  .pf-lb-stage{padding:0}.pf-lb .pf-lb-nav{display:none}
}
@media (prefers-reduced-motion:reduce){
  .lu-pf *,.lu-pf *::before,.lu-pf *::after{animation:none!important;transition:none!important}
}
/* LU v1.2: nhãn loại ảnh + KTS chủ trì */
.lu-pf .pf-kind{font:400 13px/1.5 var(--sans);color:var(--mute);margin:14px 0 0;letter-spacing:.02em}
.lu-pf .pf-kts{font:400 14px/1.5 var(--sans);color:var(--mute);margin:-6px 0 18px}
.lu-pf .pf-kts a{color:inherit;text-decoration:underline;text-underline-offset:3px}
/* LU 20/10: tên chương (H2) luôn 1 dòng trên máy tính và tablet */
.lu-pf .pf-chap h2{max-width:none;white-space:nowrap}
@media (min-width:1025px){.lu-pf .pf-chap-head{grid-template-columns:max-content minmax(0,1fr)}}
@media (max-width:760px){.lu-pf .pf-chap h2{white-space:normal;font-size:clamp(28px,8vw,36px)}}