/* ==========================================================================
   tdu-block.css — thư viện layout trang chi tiết sản phẩm (tdultrasound.vn)
   Nạp MỘT LẦN cho toàn site. Mỗi sản phẩm chỉ cần phần HTML.
   Đổi màu chủ đạo: sửa --tdu-accent / --tdu-accent-dark trong .tdu
   ========================================================================== */

.tdu{
  --tdu-accent:#0072CE;
  --tdu-accent-dark:#00559B;

  --tdu-ink:#1A1A1A;
  --tdu-body:#4E4E4E;
  --tdu-line:#DEDEDE;
  --tdu-band:#F1F1F3;
  --tdu-card:#F2F2F4;

  /* màu phụ cho dải số liệu (giữ nhịp nhiều màu như trang ref, tông xanh) */
  --tdu-c1:#E4572E;
  --tdu-c2:#00A5A5;
  --tdu-c3:#3D8BFD;
  --tdu-c4:#0072CE;

  /* .container do Flatsome cung cấp — không định nghĩa lại ở đây */
  --tdu-btn-inset:24px; /* khoảng cách nút mũi tên tới mép màn hình */

  /* biến điều chỉnh nhanh */
  --tdu-h:420px;        /* chiều cao slide carousel */
  --tdu-gap:20px;       /* khoảng cách giữa các slide */
  --tdu-dim:.28;        /* độ mờ slide không active */
  --tdu-stagger:-56px;  /* độ lệch chồng của hàng zig-zag */

  font-family:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  color:var(--tdu-body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.tdu *,.tdu *::before,.tdu *::after{box-sizing:border-box}
.tdu img,.tdu video{display:block;max-width:100%}
.tdu p{margin:0 0 1em}
.tdu p:last-child{margin-bottom:0}

/* ---------- khung ---------- */
/* Bọc nội dung bằng .container của Flatsome, không dùng class riêng. */
.tdu-sec{padding:80px 0}
.tdu-sec--band{background:var(--tdu-band)}
.tdu-sec--flush-top{padding-top:0}
.tdu-sec--flush-bot{padding-bottom:0}

/* ---------- typography ---------- */
.tdu-label{font-size:.8125rem;font-weight:600;color:var(--tdu-accent);margin:0 0 10px}
.tdu-h2{font-size:clamp(1.6rem,3vw,2.375rem);line-height:1.22;font-weight:400;
        color:var(--tdu-ink);margin:0 0 18px;letter-spacing:-.015em}
.tdu-h3{font-size:clamp(1.35rem,2.4vw,1.875rem);line-height:1.25;font-weight:400;
        color:var(--tdu-ink);margin:0 0 12px;letter-spacing:-.01em}
.tdu-h4{font-size:1.0625rem;line-height:1.35;font-weight:600;color:var(--tdu-ink);margin:0 0 10px}
.tdu-h5{font-size:.9375rem;line-height:1.35;font-weight:600;color:var(--tdu-ink);margin:0 0 8px}
.tdu-lead{font-size:1rem;line-height:1.7;max-width:68ch}
.tdu-c{text-align:center}
.tdu-c .tdu-lead{margin-inline:auto}
.tdu-hd{margin-bottom:44px}
.tdu-hd--c{max-width:820px;margin:0 auto 48px;text-align:center}

/* ---------- lưới "at a glance" (tự co theo số cột) ---------- */
.tdu-glance{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
            gap:36px;margin-top:14px}
.tdu-glance p{font-size:.875rem;line-height:1.65;margin:0}

/* ---------- media full-width ---------- */
.tdu-stage{padding-top:56px}
.tdu-stage__inner{max-width:var(--tdu-stage-w,900px);margin:0 auto}
.tdu-stage video,.tdu-stage img{width:100%;background:#000}

/* ==========================================================================
   CAROUSEL "PEEK" — slide giữa nét, hai bên mờ và cắt; chạy vòng lặp
   ========================================================================== */
.tdu-peek{position:relative}
.tdu-peek__view{overflow:hidden}
.tdu-peek__track{display:flex;align-items:center;gap:var(--tdu-gap);width:max-content;
                 will-change:transform;
                 transition:transform .65s cubic-bezier(.25,.8,.35,1)}
.tdu-peek__slide{flex:0 0 auto;opacity:var(--tdu-dim);cursor:pointer;
                 transition:opacity .5s ease}
.tdu-peek__slide.is-active{opacity:1;cursor:default}
.tdu-peek__slide img,
.tdu-peek__slide video{height:var(--tdu-h);width:auto;max-width:none;object-fit:cover}
.tdu-peek__cap{text-align:center;font-size:.875rem;color:var(--tdu-body);
               margin-top:18px;min-height:1.4em}

/* nút tròn nổi ở rìa */
.tdu-peek__btn{
  position:absolute;top:calc(var(--tdu-h) / 2);transform:translateY(-50%);
  width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;z-index:3;
  background:var(--tdu-accent);color:#fff;display:grid;place-items:center;
  box-shadow:0 2px 10px rgba(0,0,0,.18);transition:background .25s}
.tdu-peek__btn:hover{background:var(--tdu-accent-dark)}
.tdu-peek__btn:focus-visible{outline:3px solid var(--tdu-accent);outline-offset:3px}
.tdu-peek__btn[hidden]{display:none}
.tdu-peek__btn--prev{left:var(--tdu-btn-inset)}
.tdu-peek__btn--next{right:var(--tdu-btn-inset)}
.tdu-peek__btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2}

/* chấm chỉ mục (tuỳ chọn) */
.tdu-peek__dots{display:flex;justify-content:center;gap:6px;margin-top:14px}
.tdu-peek__dots button{width:26px;height:3px;padding:0;border:0;cursor:pointer;
                       background:var(--tdu-line);transition:background .3s}
.tdu-peek__dots button[aria-current="true"]{background:var(--tdu-accent)}

/* thanh caption + play/pause */
.tdu-peek__bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
.tdu-peek__bar .tdu-h5{margin:0}
.tdu-pp{width:40px;height:40px;border-radius:50%;border:1px solid var(--tdu-line);background:#fff;
        color:var(--tdu-ink);cursor:pointer;display:grid;place-items:center;flex:0 0 auto;transition:.25s}
.tdu-pp:hover{background:var(--tdu-accent);border-color:var(--tdu-accent);color:#fff}
.tdu-pp svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2}

/* ---------- tab liên kết carousel ---------- */
.tdu-tabs{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;
          border-top:1px solid var(--tdu-line);margin:40px 0 28px}
.tdu-tab{appearance:none;background:none;border:0;cursor:pointer;padding:14px 8px;
         font-size:.8125rem;font-weight:500;color:#8A8A8A;text-align:left;
         position:relative;transition:color .25s}
.tdu-tab::before{content:"";position:absolute;left:0;right:0;top:-1px;height:2px;
                 background:var(--tdu-accent);transform:scaleX(0);transform-origin:left;
                 transition:transform .4s cubic-bezier(.25,.8,.35,1)}
.tdu-tab[aria-selected="true"]{color:var(--tdu-ink);font-weight:600}
.tdu-tab[aria-selected="true"]::before{transform:scaleX(1)}
.tdu-tab:focus-visible{outline:2px solid var(--tdu-accent);outline-offset:-2px}

/* ---------- hàng zig-zag so le ---------- */
.tdu-zig{display:grid;grid-template-columns:repeat(12,1fr);align-items:center;column-gap:32px}
.tdu-zig + .tdu-zig{margin-top:var(--tdu-stagger)}
.tdu-zig__fig{grid-column:7 / span 6}
.tdu-zig__txt{grid-column:1 / span 5}
.tdu-zig--flip .tdu-zig__fig{grid-column:1 / span 6}
.tdu-zig--flip .tdu-zig__txt{grid-column:8 / span 5}
.tdu-zig__fig img,.tdu-zig__fig video{width:100%;background:#000}
.tdu-zig__txt p{font-size:.875rem;line-height:1.65;margin:0}

/* ---------- thẻ ngang ---------- */
.tdu-scard{background:var(--tdu-card);display:grid;grid-template-columns:1fr 1fr;
           align-items:stretch;overflow:hidden;margin-bottom:24px}
.tdu-scard__txt{padding:40px}
.tdu-scard__img{overflow:hidden;min-height:260px}
.tdu-scard__img img{width:100%;height:100%;object-fit:cover;
                    transition:transform .8s cubic-bezier(.25,.8,.35,1)}
.tdu-scard:hover .tdu-scard__img img{transform:scale(1.04)}
.tdu-scard--imgleft .tdu-scard__img{order:-1}
.tdu-scard p{font-size:.875rem;line-height:1.65}
.tdu-sgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));
           gap:24px;margin-bottom:24px}
.tdu-sgrid .tdu-scard{margin:0;height:100%}
.tdu-sgrid .tdu-scard__txt{padding:28px}
.tdu-sgrid .tdu-scard__img{min-height:220px}

/* ---------- nút / ghi chú ---------- */
.tdu-btn{display:inline-block;padding:11px 26px;background:var(--tdu-accent);color:#fff!important;
         font-size:.875rem;font-weight:600;text-decoration:none;border-radius:2px;transition:background .25s}
.tdu-btn:hover{background:var(--tdu-accent-dark)}
.tdu-btn--ghost{background:transparent;color:var(--tdu-accent)!important;
                box-shadow:inset 0 0 0 1px var(--tdu-accent)}
.tdu-btn--ghost:hover{background:var(--tdu-accent);color:#fff!important}
.tdu-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.tdu-note{font-size:.75rem;color:#8A8A8A;border-top:1px solid var(--tdu-line);
          padding-top:20px;margin-top:56px}

/* ---------- reveal khi cuộn ---------- */
.tdu-rv{opacity:0;transform:translateY(20px);
        transition:opacity .7s ease,transform .7s cubic-bezier(.25,.8,.35,1)}
.tdu-rv.is-in{opacity:1;transform:none}
.tdu-rv[data-d="1"]{transition-delay:.07s}
.tdu-rv[data-d="2"]{transition-delay:.14s}
.tdu-rv[data-d="3"]{transition-delay:.21s}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .tdu{--tdu-h:320px;--tdu-stagger:-24px}
  .tdu-zig__fig,.tdu-zig--flip .tdu-zig__fig{grid-column:7 / span 6}
  .tdu-zig__txt,.tdu-zig--flip .tdu-zig__txt{grid-column:1 / span 6}
}
@media (max-width:768px){
  .tdu{--tdu-h:230px;--tdu-stagger:40px;--tdu-btn-inset:12px}
  .tdu-sec{padding:52px 0}
  .tdu-zig{grid-template-columns:1fr;row-gap:16px}
  .tdu-zig__fig,.tdu-zig--flip .tdu-zig__fig,
  .tdu-zig__txt,.tdu-zig--flip .tdu-zig__txt{grid-column:1 / -1}
  .tdu-zig--flip .tdu-zig__fig{order:-1}
  .tdu-peek__btn{width:38px;height:38px}
  .tdu-scard,.tdu-sgrid .tdu-scard{grid-template-columns:1fr}
  .tdu-scard__img{order:-1;min-height:200px}
  .tdu-scard__txt{padding:28px}
  .tdu-tabs{grid-auto-flow:row;grid-auto-columns:auto}
  .tdu-tab{border-top:0;border-bottom:1px solid var(--tdu-line)}
  .tdu-tab::before{top:auto;bottom:-1px}
}
@media (prefers-reduced-motion:reduce){
  .tdu *{transition-duration:.01ms!important;animation:none!important}
  .tdu-rv{opacity:1;transform:none}
}


/* ==========================================================================
   BỔ SUNG v1.1 — component cho trang Performance 18
   ========================================================================== */

/* ---------- dòng nhấn in đậm trên tiêu đề nhỏ ---------- */
.tdu-kicker{font-size:.875rem;font-weight:700;color:var(--tdu-ink);margin:0 0 6px}

/* ---------- dải số liệu ---------- */
.tdu-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
           gap:32px;margin-top:40px}
.tdu-stat__num{font-size:clamp(2.5rem,5vw,3.5rem);line-height:1;font-weight:300;
               color:var(--tdu-ink);letter-spacing:-.03em;margin:0 0 14px}
.tdu-stat__bar{height:3px;width:100%;background:var(--tdu-c1);margin-bottom:14px;
               transform:scaleX(0);transform-origin:left;
               transition:transform .8s cubic-bezier(.25,.8,.35,1) .15s}
.tdu-stat.is-in .tdu-stat__bar,.is-in .tdu-stat__bar{transform:scaleX(1)}
.tdu-stats > :nth-child(2) .tdu-stat__bar{background:var(--tdu-c2)}
.tdu-stats > :nth-child(3) .tdu-stat__bar{background:var(--tdu-c3)}
.tdu-stats > :nth-child(4) .tdu-stat__bar{background:var(--tdu-c4)}
.tdu-stat p{font-size:.8125rem;line-height:1.55;margin:0}

/* ---------- carousel chế độ full-width (không lộ slide bên) ---------- */
.tdu-peek--full .tdu-peek__track{width:auto;gap:0}
.tdu-peek--full .tdu-peek__slide{flex:0 0 100%;opacity:1;cursor:default}
.tdu-peek--full .tdu-peek__slide img,
.tdu-peek--full .tdu-peek__slide video{height:auto;width:100%}
.tdu-peek__desc{font-size:.875rem;line-height:1.7;margin-top:20px;max-width:78ch}
.tdu-peek--full .tdu-peek__cap{text-align:left}

/* ---------- khối sticky media (danh sách trái, ảnh phải dính) ---------- */
.tdu-sticky{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);
            gap:64px;align-items:start}
.tdu-sticky__media{position:sticky;top:100px;aspect-ratio:var(--tdu-sticky-ar,4/3);background:var(--tdu-band)}
.tdu-sticky__fig{position:absolute;inset:0;opacity:0;transition:opacity .55s ease}
.tdu-sticky__fig.is-active{opacity:1}
.tdu-sticky__fig img,.tdu-sticky__fig video{width:100%;height:100%;object-fit:cover}
.tdu-sticky__item{padding:56px 0;border-bottom:1px solid var(--tdu-line);position:relative}
.tdu-sticky__item:first-child{padding-top:0}
.tdu-sticky__item::before{content:"";position:absolute;left:-20px;top:56px;bottom:56px;width:3px;
                          background:var(--tdu-accent);transform:scaleY(0);transform-origin:top;
                          transition:transform .45s cubic-bezier(.25,.8,.35,1)}
.tdu-sticky__item.is-active::before{transform:scaleY(1)}
.tdu-sticky__item p{font-size:.875rem;line-height:1.65;margin:0}

/* ---------- danh sách dịch vụ theo nhóm (tiêu đề cột trái + icon) ---------- */
.tdu-group{display:grid;grid-template-columns:minmax(0,230px) minmax(0,1fr);
           gap:48px;border-top:1px solid var(--tdu-line);padding:40px 0 56px}
.tdu-group:last-child{padding-bottom:16px}
.tdu-group__title{font-size:1.125rem;font-weight:400;color:var(--tdu-ink);
                  margin:0;padding:0;border:0}
.tdu-group__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
                 gap:40px 32px}
.tdu-group__grid .tdu-h4{font-weight:500;font-size:1rem;margin-bottom:12px}
.tdu-group__grid p{font-size:.875rem;line-height:1.65;margin:0}

/* icon dùng chung — dán trực tiếp <svg class="tdu-ico"> trong HTML */
.tdu-ico{display:block;width:30px;height:30px;margin-bottom:20px;color:var(--tdu-ink);
         fill:currentColor;stroke:none}
.tdu-ico--accent{color:var(--tdu-accent)}

@media (max-width:1024px){
  .tdu-sticky{gap:40px}
}
@media (max-width:1024px){
  .tdu-group{grid-template-columns:minmax(0,180px) minmax(0,1fr);gap:32px}
}
@media (max-width:768px){
  .tdu-group{grid-template-columns:1fr;gap:24px;padding:32px 0 44px}
  .tdu-group__grid{gap:32px 24px}
  .tdu-sticky{grid-template-columns:1fr;gap:24px}
  .tdu-sticky__media{top:70px;aspect-ratio:16/10!important;margin-bottom:8px}
  .tdu-sticky__item{padding:32px 0}
  .tdu-sticky__item::before{left:-12px;top:32px;bottom:32px}
  .tdu-stats{gap:24px}
}


/* ==========================================================================
   BỔ SUNG v1.2 — trích dẫn chuyên gia + link "Tìm hiểu thêm"
   ========================================================================== */

/* ---------- trích dẫn có ảnh tròn, căn giữa ---------- */
.tdu-quote{max-width:820px;margin:0 auto;text-align:center}
.tdu-quote__ava{width:110px;height:110px;border-radius:50%;overflow:hidden;margin:0 auto 28px;background:var(--tdu-line)}
.tdu-quote__ava img{width:100%;height:100%;object-fit:cover}
.tdu-quote blockquote{margin:0;font-size:clamp(1.05rem,1.8vw,1.35rem);line-height:1.55;
                      font-weight:300;color:var(--tdu-ink)}
.tdu-quote__by{margin-top:24px;font-size:.875rem;line-height:1.5}
.tdu-quote__by strong{display:block;color:var(--tdu-ink);font-weight:600}

/* ---------- link "Tìm hiểu thêm ›" ---------- */
.tdu-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;
          color:var(--tdu-accent);font-size:.875rem;font-weight:500;text-decoration:none}
.tdu-more::after{content:"›";font-size:1.15em;line-height:1;transition:transform .25s}
.tdu-more:hover::after{transform:translateX(3px)}

@media (max-width:768px){
  .tdu-quote__ava{width:88px;height:88px;margin-bottom:20px}
}


/* ==========================================================================
   BỔ SUNG v1.4 — carousel video có caption 2 dòng căn giữa (Vivid Pioneer)
   ========================================================================== */
.tdu-peek--center .tdu-peek__cap{font-weight:600;color:var(--tdu-ink);margin-top:22px}
.tdu-peek__sub{text-align:center;font-size:.875rem;color:var(--tdu-body);margin-top:6px;min-height:1.3em}
.tdu-peek__dots--c{justify-content:center}
.tdu-peek--center .tdu-peek__slide video{background:#000}
/* khoá tỉ lệ: nếu không, video chưa tải xong sẽ có width:0 và phép canh giữa sai */
.tdu-peek__slide video{aspect-ratio:16/9;height:var(--tdu-h);width:auto}
.tdu-peek__slide video[data-ar="4x3"]{aspect-ratio:4/3}
.tdu-refs{margin:14px 0 0;padding-left:1.2em;font-size:.8125rem;line-height:1.7;color:#6E6E6E}
.tdu-refs li{margin-bottom:6px}


/* ==========================================================================
   BỔ SUNG v1.6 — nhúng YouTube giữ tỉ lệ + sơ đồ điểm nóng (Vivid E95)
   ========================================================================== */

/* ---------- video YouTube: chỉ tải iframe khi bấm ---------- */
.tdu-yt{position:relative;aspect-ratio:16/9;background:#000;border-radius:6px;
        overflow:hidden;cursor:pointer}
.tdu-yt img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease,opacity .3s}
.tdu-yt:hover img{transform:scale(1.02);opacity:.85}
.tdu-yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.tdu-yt__play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
              width:74px;height:52px;border-radius:10px;border:0;cursor:pointer;
              background:var(--tdu-accent);display:grid;place-items:center;
              transition:background .25s,transform .25s}
.tdu-yt:hover .tdu-yt__play{background:var(--tdu-accent-dark);transform:translate(-50%,-50%) scale(1.06)}
.tdu-yt__play::after{content:"";border-style:solid;border-width:11px 0 11px 18px;
                     border-color:transparent transparent transparent #fff;margin-left:4px}

/* ---------- sơ đồ điểm nóng ---------- */
.tdu-hot{position:relative;max-width:900px;margin:0 auto}
.tdu-hot__img{width:100%;display:block}
.tdu-hot__pt{position:absolute;transform:translate(-50%,-50%);z-index:2}
.tdu-hot__btn{width:34px;height:34px;border-radius:50%;border:0;cursor:pointer;
              background:var(--tdu-accent);color:#fff;font-size:20px;line-height:1;
              display:grid;place-items:center;box-shadow:0 2px 8px rgba(0,0,0,.2);
              transition:background .25s,transform .25s}
.tdu-hot__btn:hover{background:var(--tdu-accent-dark);transform:scale(1.1)}
.tdu-hot__btn[aria-expanded="true"]{background:var(--tdu-ink)}
.tdu-hot__box{position:absolute;top:50%;transform:translateY(-50%);width:260px;
              background:#fff;border:1px solid var(--tdu-line);border-radius:6px;
              padding:16px 18px;box-shadow:0 6px 22px rgba(0,0,0,.12);
              opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:3}
.tdu-hot__pt.is-open .tdu-hot__box{opacity:1;visibility:visible}
.tdu-hot__pt--l .tdu-hot__box{right:calc(100% + 14px)}
.tdu-hot__pt--r .tdu-hot__box{left:calc(100% + 14px)}
.tdu-hot__box h4{font-size:.9375rem;font-weight:600;color:var(--tdu-ink);margin:0 0 8px}
.tdu-hot__box p{font-size:.8125rem;line-height:1.6;margin:0}

@media (max-width:768px){
  /* trên mobile bỏ định vị tuyệt đối, xếp thành danh sách để đọc được */
  .tdu-hot__pt{position:static;transform:none;display:block;margin-top:14px}
  .tdu-hot__btn{display:none}
  .tdu-hot__box{position:static;transform:none;width:auto;opacity:1;visibility:visible;
                box-shadow:none;padding:14px 16px}
}


/* ==========================================================================
   BỔ SUNG v1.7 — khối thu gọn "Xem thêm" (Vivid T9)
   ========================================================================== */
.tdu-more-wrap{position:relative}
.tdu-more-wrap[data-collapsed="true"] .tdu-more-body{
  max-height:var(--tdu-more-h,320px);overflow:hidden}
.tdu-more-wrap[data-collapsed="true"] .tdu-more-body::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:110px;
  background:linear-gradient(to bottom,rgba(255,255,255,0),#fff)}
.tdu-sec--band .tdu-more-wrap[data-collapsed="true"] .tdu-more-body::after{
  background:linear-gradient(to bottom,rgba(241,241,243,0),var(--tdu-band))}
.tdu-more-body{position:relative;transition:max-height .45s ease}
.tdu-more-btn{display:inline-flex;align-items:center;gap:7px;margin-top:20px;
  background:none;border:0;padding:0;cursor:pointer;color:var(--tdu-accent);
  font-size:.9375rem;font-weight:600;font-family:inherit}
.tdu-more-btn::after{content:"";width:8px;height:8px;border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);
  transition:transform .3s}
.tdu-more-wrap[data-collapsed="false"] .tdu-more-btn::after{transform:rotate(-135deg) translateY(-2px)}

/* danh sách gạch đầu dòng dùng chung */
.tdu-list{margin:0;padding-left:1.15em;font-size:.9375rem;line-height:1.7}
.tdu-list li{margin-bottom:8px}
.tdu-list li::marker{color:var(--tdu-accent)}

/* lưới thẻ 2 cột, mục đầu tràn ngang (Vivid T9) */
.tdu-grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
.tdu-grid2 .tdu-card--wide{grid-column:1 / -1}
.tdu-card{background:var(--tdu-card-bg,#F7F5FB);border-radius:4px;overflow:hidden;
          display:flex;flex-direction:column}
.tdu-card__img{overflow:hidden;background:#0B0B0B;aspect-ratio:16/9}
.tdu-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.tdu-card:hover .tdu-card__img img{transform:scale(1.03)}
.tdu-card__txt{padding:22px 24px 26px}
.tdu-card__txt h4{font-size:.9375rem;font-weight:600;color:var(--tdu-ink);margin:0 0 8px}
.tdu-card p{font-size:.875rem;line-height:1.65;margin:0}
@media (max-width:768px){ .tdu-grid2{grid-template-columns:1fr} }

/* hai cột: chữ trái, một ảnh phải (Convenience / Transducers / Webinar) */
.tdu-split{display:grid;grid-template-columns:minmax(0,438fr) minmax(0,528fr);
           gap:60px;align-items:start}
.tdu-split__media img{width:100%;border-radius:4px}
.tdu-split__txt h4,.tdu-split__txt .tdu-sub{font-size:.9375rem;font-weight:600;
           color:var(--tdu-ink);margin:26px 0 4px}
.tdu-split__txt p{font-size:.9375rem;line-height:1.7;margin:0}
@media (max-width:900px){ .tdu-split{grid-template-columns:1fr;gap:28px}
  .tdu-split__media{order:-1} }


/* ==========================================================================
   BỔ SUNG v1.9 — khối ảnh lớn + hộp chữ lệch (Vivid T8)
   Đo từ ref: ảnh ~516px, hộp chữ 425px chồng lên, so le trái/phải
   ========================================================================== */
.tdu-feature{display:grid;grid-template-columns:repeat(12,1fr);align-items:center;
             column-gap:0;row-gap:0}
.tdu-feature__fig{grid-row:1;grid-column:6 / span 7;z-index:1}
.tdu-feature__fig img{width:100%;display:block;border-radius:4px}
.tdu-feature__box{grid-row:1;grid-column:1 / span 6;z-index:2;
                  background:#fff;padding:44px 46px;border-radius:4px;
                  box-shadow:0 2px 24px rgba(0,0,0,.07)}
.tdu-feature--flip .tdu-feature__fig{grid-column:1 / span 7}
.tdu-feature--flip .tdu-feature__box{grid-column:7 / span 6}
.tdu-feature__box h2,.tdu-feature__box h3{font-size:clamp(1.15rem,2vw,1.5rem);
  font-weight:600;letter-spacing:.02em;color:var(--tdu-ink);margin:0 0 16px}
.tdu-feature__box p{font-size:.9375rem;line-height:1.7;margin:0 0 14px}
@media (max-width:900px){
  .tdu-feature{grid-template-columns:1fr}
  .tdu-feature__fig,.tdu-feature__box,
  .tdu-feature--flip .tdu-feature__fig,.tdu-feature--flip .tdu-feature__box{
    grid-row:auto;grid-column:1 / -1}
  .tdu-feature__box{padding:28px 0 0;box-shadow:none}
}

/* liên kết dạng chữ hoa có gạch chân */
.tdu-cta-link{display:inline-block;margin-top:6px;color:var(--tdu-accent);
  font-size:.8125rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  text-decoration:none;border-bottom:2px solid var(--tdu-accent);padding-bottom:3px}
.tdu-cta-link:hover{color:var(--tdu-accent-dark);border-color:var(--tdu-accent-dark)}

/* 3 cột icon-ảnh + tiêu đề + danh sách */
.tdu-tri{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.tdu-tri__img{width:100%;border-radius:4px;margin-bottom:22px}
.tdu-tri h3{font-size:.9375rem;font-weight:700;letter-spacing:.05em;
            color:var(--tdu-ink);margin:0 0 12px}
.tdu-tri p{font-size:.875rem;line-height:1.7;margin:0 0 10px}
.tdu-tri ul{margin:0;padding-left:1.1em;font-size:.875rem;line-height:1.7}
@media (max-width:900px){ .tdu-tri{grid-template-columns:1fr;gap:34px} }


/* ==========================================================================
   BỔ SUNG v2.0 — hero sticky scrolling kiểu Vivid iq
   Đo từ ref: chữ trái 426px cuộn, ảnh phải 591px dính, tiêu đề nhỏ 335px
   ========================================================================== */
.tdu-hss{display:grid;grid-template-columns:minmax(0,426fr) minmax(0,591fr);
         gap:64px;align-items:start}
.tdu-hss__items{display:flex;flex-direction:column}
.tdu-hss__item{padding:64px 0}
.tdu-hss__item:first-child{padding-top:0}
.tdu-hss__label{font-size:.9375rem;font-weight:600;color:var(--tdu-ink);margin:0 0 12px}
.tdu-hss__item h3{font-size:clamp(1.4rem,2.4vw,1.875rem);font-weight:400;line-height:1.25;
                  color:var(--tdu-ink);margin:0 0 16px;letter-spacing:-.01em}
.tdu-hss__item p{font-size:.9375rem;line-height:1.7;margin:0}
.tdu-hss__media{position:sticky;top:110px;aspect-ratio:591/430}
.tdu-hss__fig{position:absolute;inset:0;opacity:0;transition:opacity .55s ease}
.tdu-hss__fig.is-active{opacity:1}
.tdu-hss__fig img{width:100%;height:100%;object-fit:contain}
@media (max-width:900px){
  .tdu-hss{grid-template-columns:1fr;gap:20px}
  .tdu-hss__media{top:70px;aspect-ratio:16/10;margin-bottom:10px}
  .tdu-hss__item{padding:34px 0}
}

/* trích dẫn ngắn kèm tên người nói */
.tdu-quote-sm{border-left:3px solid var(--tdu-accent);padding-left:20px;margin:0}
.tdu-quote-sm p{font-size:1.0625rem;line-height:1.6;color:var(--tdu-ink);margin:0 0 10px}
.tdu-quote-sm cite{font-style:normal;font-size:.875rem;color:var(--tdu-body)}
.tdu-quote-sm cite strong{display:block;color:var(--tdu-ink)}