.tv1{position:relative;width:100%;aspect-ratio:3072/2154;background:#0a1a12 center/cover no-repeat;overflow:hidden;container-type:inline-size}
.tv1::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,41,26,0) 40%,rgba(4,41,26,.55) 78%,#04291a 100%)}
.tv1-title{position:absolute;left:50%;top:74%;transform:translate(-50%,-50%);z-index:2;margin:0;font-family:'BlushingRose','Cormorant Garamond',Georgia,serif;font-weight:500;letter-spacing:.14em;font-size:clamp(calc(34px*var(--ov-tv1,1)),calc(6.4cqw*var(--ov-tv1,1)),calc(150px*var(--ov-tv1,1)));color:#fdf6c2;-webkit-text-fill-color:#fdf6c2;-webkit-text-stroke:2.5px #ffffff;paint-order:stroke fill;text-transform:uppercase;white-space:nowrap;line-height:1}
.tv1-arrow{position:absolute;left:50%;top:85%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center}
.tv1-arrow .ln{width:1.5px;height:7cqw;max-height:150px;background:linear-gradient(180deg,rgba(230,213,189,.15),#f0e6d5)}
.tv1-arrow .tri{width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-top:11px solid #f0e6d5;margin-top:-1px}
/* tabs */
.tv-tabs{display:flex;justify-content:center;gap:18px;padding:0;background:transparent;margin:0 0 clamp(32px,4vw,72px)}
.tv-tab{border:1px solid rgba(255,246,188,.55);background:transparent;color:var(--cream);font-family:'Gilroy',sans-serif;font-weight:400;letter-spacing:.03em;text-transform:none;font-size:14px;padding:.7em 2em;border-radius:24px;cursor:pointer;transition:.3s;outline:0}
.tv-tab.on{background:var(--gold);color:#1a1206;border-color:var(--gold);font-weight:600}
/* S2 album */
.tv2{background:#04291a center/cover no-repeat;padding:100px 4.5% 71px}
.tv2-in{max-width:1300px;margin:0 auto}
.tv-collage{position:relative;width:100%;aspect-ratio:2814/1459}
.tv-tile{position:absolute;overflow:hidden;border-radius:8px;border:2px solid #04291a;box-shadow:0 8px 26px rgba(0,0,0,.4)}
.tv-tile img{width:100%;height:100%;object-fit:cover;display:block}
.tv-tile.empty{border:1px solid rgba(255,246,188,.35);box-shadow:none;background:rgba(255,255,255,.015)}
.tv-tile.vid .pl{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:14%;max-width:64px;aspect-ratio:1;display:grid;place-items:center;background:rgba(4,26,14,.55);border:1px solid rgba(255,246,188,.7);border-radius:50%;color:#fdf6c2;font-size:1.2vw}
.tv-pager{display:flex;justify-content:center;align-items:center;gap:12px;margin-top:3%}
.tv-pager:empty{display:none}
.tv-pager .dot{width:10px;height:10px;border-radius:50%;border:1px solid rgba(255,246,188,.6);background:transparent;cursor:pointer;transition:.25s;padding:0}
.tv-pager .dot.on{background:var(--gold);border-color:var(--gold)}
.tv-pager .arw{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,246,188,.5);background:transparent;color:#fdf6c2;cursor:pointer;display:grid;place-items:center;font-size:18px}
.tv-pager .arw:disabled{opacity:.35;cursor:default}
/* video slider */
.tv-vslide{position:relative;display:flex;align-items:center;justify-content:center;min-height:38vw;max-height:640px}
.tv-vmain{position:relative;z-index:3;width:64%;max-width:840px}
.tv-vframe{position:relative;width:100%;aspect-ratio:16/9;border-radius:10px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.5);background:#000}
.tv-vframe iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.tv-vtitle{text-align:center;margin-top:20px;font-family:'BlushingRose','Cormorant Garamond',Georgia,serif;font-weight:400;color:#002900;font-size:clamp(calc(24px*var(--ov-tvv,1)),calc(3vw*var(--ov-tvv,1)),calc(46px*var(--ov-tvv,1)));line-height:1.1}
.tv-vside{position:absolute;top:calc(50% - 34px);transform:translateY(-50%);width:26%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;filter:brightness(.5);opacity:.65;cursor:pointer;z-index:2;transition:.3s}
.tv-vside:hover{opacity:.85}
.tv-vside.l{left:0}
.tv-vside.r{right:0}
@media(max-width:820px){.tv-vmain{width:100%}.tv-vside{display:none}.tv-vslide{min-height:auto;max-height:none}}
@media(max-width:820px){.tv1{aspect-ratio:3/2}.tv1-title{font-size:32px}.tv-collage{aspect-ratio:1/1.4}.tv-tile{position:relative!important;left:auto!important;top:auto!important;width:100%!important;height:auto!important;aspect-ratio:3/2;margin-bottom:12px}.tv-collage{aspect-ratio:auto;display:flex;flex-direction:column}.tv-tile.vid .pl{font-size:20px;width:56px}}
.ftx{background:#062018 url(/assets/thu-vien/7116154aaa72.jpg) center/cover no-repeat;margin:0;padding:0}

/* ===== Backdrop gradient xanh — bọc .sub-canvas từ S2↓ (hero + footer giữ nguyên) ===== */
body[data-page="thu-vien"]{background:#011e10}
body[data-page="thu-vien"] .sub-canvas{background:#011e10 url(/assets/sub/sub-bg-v1.jpg) top center/100% 100% no-repeat}
body[data-page="thu-vien"] .sub-canvas>section{background-color:transparent!important;background-image:none!important}
body[data-page="thu-vien"] .rmft{background:#001f11 !important}

/* ===== Album S2: grid 2x2 card danh mục (ảnh bo + layer lệch + tên vàng) theo thiết kế ===== */
.tv-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(34px,4.2vw,76px) clamp(44px,5.5vw,96px);max-width:1360px;margin:0 auto}
.tv-cat{position:relative;border:0;background:none;padding:0;cursor:pointer;aspect-ratio:742/370;display:block;container-type:inline-size}
.tv-cat-front{position:absolute;inset:0;z-index:2;border-radius:23px;background:#000 center/cover no-repeat;box-shadow:0 18px 44px -14px rgba(0,0,0,.6)}
.tv-cat-fade{position:absolute;left:0;right:0;bottom:0;height:60%;z-index:3;border-radius:0 0 23px 23px;pointer-events:none;background:linear-gradient(0deg,rgba(2,43,1,.95) 0%,rgba(2,43,1,.5) 48%,rgba(2,43,1,0) 100%)}
.tv-cat-name{position:absolute;left:0;right:0;bottom:0;z-index:4;display:flex;align-items:flex-end;justify-content:center;text-align:center;padding:0 7% 3.37cqw;font-family:'HelveticaNeue','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:400;text-transform:uppercase;letter-spacing:.04em;line-height:1.25;font-size:4.7cqw;background:linear-gradient(100deg,#ffe589,#fffef1);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;pointer-events:none}
.tv-cat:hover .tv-cat-front{box-shadow:0 22px 54px -12px rgba(0,0,0,.7)}
/* dots */
.tv-dots:empty{display:none}
.tv-dots{display:flex;justify-content:center;gap:12px;margin-top:clamp(28px,3.4vw,60px)}
.tv-dot{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.5)}
.tv-dot.on{background:#fff}
/* tabs dạng pill viền trắng, active nền đen */
.tv-tab{border:2px solid rgba(255,255,255,.85);background:transparent;color:#fdf6c2;border-radius:24px;padding:.6em 2.2em;font-family:'HelveticaNeue','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:400;text-transform:uppercase;letter-spacing:.03em}
.tv-tab.on{background:#000;color:#fdf6c2;border-color:#fff;font-weight:400}
@media(max-width:820px){.tv-grid{grid-template-columns:1fr;gap:40px}.tv-cat-name{font-size:22px}}

.tv-sec-title{text-align:center;margin:0 0 clamp(26px,3vw,48px);font-family:'HelveticaNeue','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:400;text-transform:uppercase;letter-spacing:.05em;color:#fdf6c2;font-size:clamp(20px,2.4vw,34px)}

/* ===== Lightbox album ===== */
.tv-cat{cursor:pointer}
.tv-lb{position:fixed;inset:0;z-index:95;display:flex;align-items:center;justify-content:center;background:rgba(1,10,6,.93);padding:5vh 6vw}
.tv-lb[hidden]{display:none}
.tv-lb-img{max-width:90vw;max-height:82vh;object-fit:contain;border-radius:6px;box-shadow:0 24px 70px rgba(0,0,0,.65)}
.tv-lb-x{position:absolute;top:2.6vh;right:2.6vw;width:48px;height:48px;border:0;background:none;color:#fdf6c2;font-size:36px;line-height:1;cursor:pointer}
.tv-lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:54px;height:54px;border-radius:50%;border:1px solid rgba(255,246,188,.5);background:rgba(4,26,14,.5);color:#fdf6c2;font-size:26px;cursor:pointer;display:grid;place-items:center;transition:.25s}
.tv-lb-nav:hover{background:rgba(4,26,14,.8)}
.tv-lb-nav.prev{left:2.5vw}.tv-lb-nav.next{right:2.5vw}
.tv-lb-cap{position:absolute;bottom:4.2vh;left:0;right:0;text-align:center;color:#fdf6c2;font-family:'HelveticaNeue','Helvetica Neue',Helvetica,Arial,sans-serif;text-transform:uppercase;letter-spacing:.05em;font-size:16px}
.tv-lb-count{position:absolute;bottom:2.2vh;left:0;right:0;text-align:center;color:rgba(255,246,188,.7);font-size:13px}
@media(max-width:768px){.tv-lb-nav{width:44px;height:44px;font-size:22px}.tv-lb-nav.prev{left:2px}.tv-lb-nav.next{right:2px}}