:root{
  --glass-bg: rgba(255,255,255,.72);
  --glass-border: rgba(255,255,255,.9);
  --glass-shadow:
    0 40px 120px rgba(15,23,42,.12),
    inset 0 0 0 1px var(--glass-border);

  --glass-blur: blur(28px) saturate(1.35);
  --glass-highlight: linear-gradient(
    135deg,
    rgba(255,255,255,.85),
    rgba(255,255,255,.15)
  );

  --accent-blue: #2563eb;
  --accent-cyan: #60a5fa;
}

/* ======================================================
   Edge AI Glass Hero
====================================================== */

.edge-ai-glass-hero{
  position:relative;
  padding: clamp(100px,10vw,160px) 6vw;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,.95), transparent 60%),
    linear-gradient(180deg,#f8fafc,#eef2f7);
  overflow:hidden;
}

.edge-ai-glass-hero__container{
  max-width: 1500px;
  margin:auto;
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 60px;
  align-items:center;
}

/* ---------- Left ---------- */

.edge-ai-glass-hero__badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:.7rem;
  font-weight:600;
  color:#2563eb;
  background:rgba(255,255,255,.65);
  backdrop-filter: blur(20px);
}

.edge-ai-glass-hero__title{
  margin-top:18px;
  font-size: clamp(2.4rem,4vw,3.6rem);
  font-weight:700;
  letter-spacing:-.02em;
  color:#0f172a;
}

.edge-ai-glass-hero__title span{
  color:#60a5fa;
}

.edge-ai-glass-hero__desc{
  margin-top:20px;
  max-width:520px;
  font-size:.95rem;
  line-height:1.7;
  color:#475569;
}

/* ---------- Actions ---------- */

.edge-ai-glass-hero__actions{
  margin-top:32px;
  display:flex;
  gap:16px;
}

.btn-glass{
  padding:12px 26px;
  border-radius:999px;
  font-size:.8rem;
  font-weight:600;
  text-decoration:none;
  transition:.3s ease;
}

.btn-glass.primary{
  color:#fff;
  background:linear-gradient(135deg,#2563eb,#60a5fa);
  box-shadow:0 12px 30px rgba(37,99,235,.35);
}

.btn-glass.ghost{
  color:#2563eb;
  background:rgba(255,255,255,.6);
  backdrop-filter: blur(20px);
}

/* ---------- Right Visual ---------- */

.edge-ai-glass-hero__visual{
  position:relative;
}

.edge-ai-glass-hero__glass-frame{
  padding:28px;
  border-radius:32px;
  background:rgba(255,255,255,.65);
  backdrop-filter: blur(30px) saturate(1.3);
  box-shadow:
    0 40px 100px rgba(15,23,42,.15),
    inset 0 0 0 1px rgba(255,255,255,.75);
}

.edge-ai-glass-hero__image{
  width:100%;
  display:block;
  border-radius:18px;
  transition: transform .6s ease;
}

.edge-ai-glass-hero__glass-frame:hover .edge-ai-glass-hero__image{
  transform: scale(1.03);
}

/* ======================================================
   Edge AI Spec Overlay 
====================================================== */

.edge-ai-spec-overlay{
  position:absolute;
  inset:0;
  pointer-events:none; /* 預設不干擾 */
}

/* 圓點 */
.edge-ai-spec-dot{
  position:absolute;
  pointer-events:auto;
  cursor:pointer;
}

/* 點位建議 */
.edge-ai-spec-dot[data-spec="cpu"]{
  top:18%;
  left:22%;
}

.edge-ai-spec-dot[data-spec="npu"]{
  top:42%;
  left:48%;
}

.edge-ai-spec-dot[data-spec="io"]{
  top:68%;
  left:30%;
}

/* 圓點外觀 */
.edge-ai-spec-dot span{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;

  width:46px;
  height:46px;
  border-radius:50%;

  font-size:.72rem;
  font-weight:700;
  letter-spacing:.03em;

  color:var(--accent-blue);
  background:
    var(--glass-highlight),
    var(--glass-bg);

  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);

  transition:
    transform .45s cubic-bezier(.22,.61,.36,1),
    box-shadow .45s ease;
}

.edge-ai-spec-dot span::after{
  content:"";
  position:absolute;
  inset:-6px;
  border-radius:50%;
  background: radial-gradient(
    circle,
    rgba(96,165,250,.35),
    transparent 70%
  );
  opacity:0;
  transition:.4s ease;
}

/* hover 圓點 */
.edge-ai-spec-dot:hover span,
.edge-ai-spec-dot.is-open span{
  transform: scale(1.15);
  box-shadow:
    0 25px 60px rgba(37,99,235,.35),
    inset 0 0 0 1px rgba(255,255,255,.95);
}

.edge-ai-spec-dot:hover span::after,
.edge-ai-spec-dot.is-open span::after{
  opacity:1;
}

/* 浮層卡片 */
.edge-ai-spec-card{
  position:absolute;
  top:50%;
  left:64px;
  transform: translateY(-50%) scale(.96);

  width:270px;
  padding:20px 22px;
  border-radius:20px;

  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,.9),
      rgba(255,255,255,.6)
    );

  backdrop-filter: blur(30px) saturate(1.4);
  box-shadow:
    0 30px 90px rgba(15,23,42,.18),
    inset 0 1px 0 rgba(255,255,255,.9);

  opacity:0;
  pointer-events:none;

  transition:
    opacity .35s ease,
    transform .45s cubic-bezier(.22,.61,.36,1);
}

/* 文字 */
.edge-ai-spec-card strong{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.9rem;
  font-weight:700;
  color:#0f172a;
}

.edge-ai-spec-card ul{
  margin-top:12px;
  list-style:none;
  padding:0;
  margin:0;
}

.edge-ai-spec-card li{
  font-size:.78rem;
  line-height:1.6;
  color:#475569;
  color:#475569;
  margin-bottom:6px;
}

.edge-ai-spec-card b{
  color:#2563eb;
}

/* hover 顯示 */
/* 顯示狀態 */
.edge-ai-spec-dot:hover .edge-ai-spec-card,
.edge-ai-spec-dot.is-open .edge-ai-spec-card{
  opacity:1;
  transform: translateY(-50%) scale(1);
}

/* 手機點擊顯示 */
.edge-ai-spec-dot.is-open .edge-ai-spec-card{ 
  pointer-events:auto;
}

.edge-ai-spec-dot[data-spec="npu"] span{
  animation: npuPulse 3.5s ease-in-out infinite;
}

@keyframes npuPulse{
  0%,100%{ box-shadow: var(--glass-shadow); }
  50%{
    box-shadow:
      0 30px 80px rgba(96,165,250,.45),
      inset 0 0 0 1px rgba(255,255,255,.95);
  }
}

/* ---------- RWD ---------- */

@media(max-width:1200px){
  .edge-ai-glass-hero__container{
    grid-template-columns:1fr;
    text-align:center;
  }

  .edge-ai-glass-hero__desc{
    margin-left:auto;
    margin-right:auto;
  }

  .edge-ai-glass-hero__actions{
    justify-content:center;
  }
}

@media(max-width:900px){
  .edge-ai-spec-card{
    left:50%;
    top:110%;
    transform: translateX(-50%) scale(.95);
  }

  .edge-ai-spec-dot.is-open .edge-ai-spec-card{
    transform: translateX(-50%) scale(1);
  }
}


/* ======================================================
   VDS Edge Glass Section
====================================================== */

.vds-edge-glass-section{
  padding: clamp(50px,10vw,80px) 6vw;
  background:
    radial-gradient(circle at top right, rgba(255,255,255,.95), transparent 60%),
    linear-gradient(180deg,#f8fafc,#eef2f7);
}

.vds-edge-glass__container{
  max-width:1500px;
  margin:auto;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:70px;
  align-items:center;
}

/* ---------- Left ---------- */

.vds-edge-glass__badge{
  display:inline-block;
  padding:6px 14px;
  font-size:.7rem;
  font-weight:600;
  color:#2563eb;
  border-radius:999px;
  background:rgba(255,255,255,.7);
  backdrop-filter: blur(18px);
}

.vds-edge-glass__title{
  margin-top:18px;
  font-size:clamp(2.2rem,3.8vw,3.2rem);
  font-weight:700;
  letter-spacing:-.02em;
  color:#0f172a;
}

.vds-edge-glass__title span{
  color:#60a5fa;
}

.vds-edge-glass__desc{
  margin-top:22px;
  max-width:560px;
  font-size:.95rem;
  line-height:1.7;
  color:#475569;
}

.vds-edge-glass__desc b{
  color:#2563eb;
}

.vds-product-glass{
  position:relative;
  padding:32px;
  border-radius:36px;

  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,.96),
      rgba(255,255,255,.75)
    );

  backdrop-filter: blur(32px) saturate(1.4);

  box-shadow:
    0 50px 140px rgba(15,23,42,.18),
    inset 0 1px 0 rgba(255,255,255,.95);

  transition: transform .6s cubic-bezier(.22,.61,.36,1);
}

/* 上緣高光 */
.vds-product-glass::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,.85),
      rgba(255,255,255,0)
    );
  opacity:.6;
  pointer-events:none;
}

/* hover 漂浮 */
.vds-product-glass:hover{
  transform: translateY(-6px);
}

.vds-product-glass img{
  width:100%;
  border-radius:18px;
  display:block;
  transition: transform .8s cubic-bezier(.22,.61,.36,1);
}

/* ---------- Feature Cards ---------- */

.vds-edge-glass__features{
  margin-top:36px;
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:18px;
}

.vds-feature-card{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,.94),
      rgba(255,255,255,.68)
    );
  backdrop-filter: blur(26px) saturate(1.45);
  box-shadow:
    0 35px 90px rgba(15,23,42,.15),
    inset 0 1px 0 rgba(255,255,255,.95);
  transition:
    transform .45s cubic-bezier(.22,.61,.36,1),
    box-shadow .45s ease;
  opacity:0;
  transform: translateY(16px) scale(.98);
  animation: cardIn .7s cubic-bezier(.22,.61,.36,1) forwards;
  align-items:flex-start;  
  min-height:88px;
  padding:22px 26px;
  gap:16px;
}

.vds-feature-card > div{
  padding-left:6px;
  padding-top:2px;   
}

.vds-feature-card:nth-child(1){ animation-delay:.05s }
.vds-feature-card:nth-child(2){ animation-delay:.12s }
.vds-feature-card:nth-child(3){ animation-delay:.18s }
.vds-feature-card:nth-child(4){ animation-delay:.25s }

@keyframes cardIn{
  to{
    opacity:1;
    transform: translateY(0) scale(1);
  }
}

.vds-feature-card i{
  font-size:1.65rem;              
  width:54px;
  height:54px;
  min-width:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:164px;
  color:#2563eb;
  margin-left:4px;
  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,.95),
      rgba(255,255,255,.65)
    );
  backdrop-filter: blur(20x) saturate(1.4);
  box-shadow:
    0 14px 36px rgba(37,99,235,.28),
    inset 0 0 0 1px rgba(255,255,255,.9);
  transition:  
    transform .45s cubic-bezier(.22,.61,.36,1),
    box-shadow .45s ease;
}

/* 卡片高光邊緣 */
.vds-feature-card::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,.75),
      rgba(255,255,255,0)
    );
  opacity:.6;
  pointer-events:none;
}

.vds-feature-card strong{
  font-size:.88rem;
  font-weight:700;
  color:#0f172a;
  letter-spacing:-.01em;
  display:block;
  margin-bottom:4px;
}

.vds-feature-card span{
  display:block;
  margin-top:4px;
  font-size:.72rem;
  color:#64748b;
  line-height:1.5;
}

.vds-feature-card:hover{
  transform: translateY(-6px) scale(1.01);
  box-shadow:
    0 45px 120px rgba(37,99,235,.28);
}

.vds-feature-card:hover i{
  transform: scale(1.18) rotate(-2deg);
  box-shadow:
    0 24px 60px rgba(96,165,250,.45),
    inset 0 0 0 1px rgba(255,255,255,.95);
}

/* ---------- Visual ---------- */

.vds-edge-glass__visual{
  position:relative;
}

.vds-edge-glass__glass{
  padding:26px;
  border-radius:30px;
  background:rgba(255,255,255,.65);
  backdrop-filter: blur(30px) saturate(1.3);
  box-shadow:
    0 40px 100px rgba(15,23,42,.18),
    inset 0 0 0 1px rgba(255,255,255,.9);
}

.vds-edge-glass__glass img{
  width:100%;
  border-radius:18px;
  display:block;
  transition:transform .6s ease;
}

.vds-edge-glass__glass:hover img{
  transform:scale(1.03);
}

/* ---------- RWD ---------- */

@media(max-width:1100px){
  .vds-edge-glass__container{
    grid-template-columns:1fr;
    gap:50px;
  }

  .vds-edge-glass__features{
    grid-template-columns:1fr;
  }
}

/* ======================================================
   AI Modules Glass Section
====================================================== */

.ai-modules-glass-section{
  padding: clamp(90px,10vw,140px) 6vw;
  background:
    radial-gradient(circle at top center, #ffffff, #f1f5f9);
}

/* ---------- Header ---------- */

.ai-modules-glass__header{
  text-align:center;
  max-width:820px;
  margin:0 auto 70px;
}

.ai-modules-glass__eyebrow{
  font-size:.7rem;
  letter-spacing:.18em;
  font-weight:600;
  color:#3b82f6;
}

.ai-modules-glass__title{
  margin-top:16px;
  font-size:clamp(2.2rem,4vw,3.1rem);
  font-weight:800;
  color:#0f172a;
}

.ai-modules-glass__title span{
  color:#60a5fa;
}

.ai-modules-glass__desc{
  margin-top:20px;
  font-size:.95rem;
  line-height:1.7;
  color:#475569;
}

/* ---------- Grid ---------- */

.ai-modules-glass__grid{
  max-width:1400px;
  margin:auto;
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:32px;
}

/* ---------- Card ---------- */

.ai-module-card{
  position:relative;
  padding:32px;
  border-radius:28px;
  overflow:hidden;
  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,.96),
      rgba(255,255,255,.72)
    );
  backdrop-filter: blur(32px) saturate(1.45);
  box-shadow:
    0 45px 140px rgba(15,23,42,.14),
    inset 0 1px 0 rgba(255,255,255,.95);
  transition:
    transform .6s cubic-bezier(.22,.61,.36,1),
    box-shadow .6s ease;
  opacity:0;
  transform: translateY(24px) scale(.96);
}

.ai-module-card::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,.85),
      rgba(255,255,255,0)
    );
  opacity:.6;
  pointer-events:none;
}

.ai-module-card:hover{
  ransform: translateY(-10px) scale(1.015);
  box-shadow:
    0 65px 180px rgba(15,23,42,.22);
}

/* ---------- Icon ---------- */

.ai-module-icon{
  width:56px;
  height:56px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.4rem;
  margin-bottom:22px;
  color:#ffffff;
  background:
    linear-gradient(
      135deg,
      rgba(var(--icon-rgb), .85),
      rgba(var(--icon-rgb), .55)
    );
  backdrop-filter: blur(18px) saturate(1.4);
  box-shadow:
    0 14px 36px rgba(var(--icon-rgb), .35),
    inset 0 0 0 1px rgba(255,255,255,.45);
  transition:
    transform .45s cubic-bezier(.22,.61,.36,1),
    box-shadow .45s ease;
}

.ai-module-icon i{
  opacity:.95;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,.15));
}

.ai-module-icon::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    radial-gradient(
      circle at top left,
      rgba(255,255,255,.35),
      transparent 60%
    );
  pointer-events:none;
}

.ai-module-card:hover{
  transform: translateY(-10px) scale(1.015);
  box-shadow:
    0 65px 180px rgba(15,23,42,.22);
}

.ai-module-card:hover .ai-module-icon{
  transform: scale(1.15) translateY(-2px);
  box-shadow:
    0 22px 60px rgba(var(--icon-rgb), .55),
    inset 0 0 0 1px rgba(255,255,255,.65);
}

/* ---------- Text ---------- */

.ai-module-card h3{
  font-size:1.05rem;
  font-weight:700;
  letter-spacing:-.01em;
  color:#0f172a;
}

.ai-module-tag{
  display:inline-block;
  margin:8px 0 14px;
  font-size:.65rem;
  font-weight:600;
  letter-spacing:.05em;
  color:#64748b;
}

.ai-module-card p{
  margin-top:10px;
  font-size:.8rem;
  line-height:1.65;
  color:#475569;
}

.ai-module-card a{
  margin-top:22px;
  display:inline-block;
  margin-top:18px;
  font-size:.75rem;
  font-weight:600;
  color:#3b82f6;
  text-decoration:none;
}

/* ---------- Color Themes ---------- */

/* VF */
.theme-blue{ --icon-rgb: 59,130,246; }

/* VDS */
.theme-indigo{ --icon-rgb: 79,70,229; }

/* QLD */
.theme-amber{ --icon-rgb: 245,158,11; }

/* ANPR */
.theme-green{ --icon-rgb: 16,185,129; }

/* PFD */
.theme-purple{ --icon-rgb: 139,92,246; }

/* FSD */
.theme-red{ --icon-rgb: 239,68,68; }

/* IID */
.theme-dark{ --icon-rgb: 15,23,42; }

/* CCR */
.theme-cyan{ --icon-rgb: 6,182,212; }


@media(max-width:1200px){
  .ai-modules-glass__grid{
    grid-template-columns:repeat(2, 1fr); /* 平板 2×4 */
    gap:28px;
  }
}

@media(max-width:640px){
  .ai-modules-glass__grid{
    grid-template-columns:1fr; /* 手機 1×8 */
    gap:22px;
  }
}

.ai-module-detail-glass{
  padding:120px 6vw;
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(90,140,255,.12), transparent 60%),
    #f6f8fc;
}

.amd-container{
  max-width:1280px;
  margin:auto;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:64px;
}

/* ========== LEFT ========== */
.amd-badge{
  display:inline-block;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(80,120,255,.12);
  color:#4f7cff;
  font-size:13px;
  margin-bottom:16px;
}

.amd-info h2{
  font-size:40px;
  letter-spacing:-.5px;
  margin-bottom:18px;
}

.amd-info p{
  max-width:520px;
  line-height:1.9;
  margin-bottom:12px;
}

/* 功能 chips */
.amd-feature-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px 20px;
  margin:36px 0 44px;
}

.amd-feature-grid .chip{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 20px;
  border-radius:18px;
  background:
    linear-gradient(180deg,
      rgba(255,255,255,.95),
      rgba(255,255,255,.78)
    );
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:
    0 10px 30px rgba(0,0,0,.08),
    inset 0 1px 0 rgba(255,255,255,.9);
  font-size:15px;
  font-weight:500;
  color:#1f2937;
}

.amd-feature-grid i{
  width:34px;
  height:34px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  color:#4f7cff;
  background:
    linear-gradient(180deg,
      rgba(79,124,255,.22),
      rgba(79,124,255,.10)
    );
  box-shadow:
    0 8px 18px rgba(79,124,255,.25),
    inset 0 1px 0 rgba(255,255,255,.8);
}

/* 應用 */
.amd-usage{
  margin-top:44px;
  padding:26px 28px;
  border-radius:22px;
  background:
    linear-gradient(180deg,
      rgba(255,255,255,.9),
      rgba(255,255,255,.75)
    );
  backdrop-filter:blur(16px);
}
.amd-usage h4{
  margin-bottom:10px;
}

.amd-usage li{
  list-style:none;
  padding-left:24px;
  margin:8px 0;
  position:relative;
}

.amd-usage li::before{
  content:"✓";
  position:absolute;
  left:0;
  color:#4f7cff;
}

/* ========== RIGHT ========== */
.amd-visual-card{
  position:relative;
  border-radius:26px;
  overflow:hidden;
  background:rgba(255,255,255,.65);
  backdrop-filter:blur(18px);
  box-shadow:0 40px 80px rgba(0,0,0,.18);
}

.amd-visual-card img{
  width:100%;
  display:block;
}

.amd-live-glass{
  position:absolute;
  left:20px;
  bottom:20px;
  padding:18px 22px;
  border-radius:18px;
  background:
    linear-gradient(180deg,
      rgba(30,30,30,.55),
      rgba(20,20,20,.45)
    );
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:
    0 18px 40px rgba(0,0,0,.35),
    inset 0 1px 0 rgba(255,255,255,.08);
  color:#fff;
}

.amd-live-glass strong{
  font-size:12px;
  letter-spacing:.08em;
  opacity:.85;
}

.amd-live-glass span{
  display:block;
  margin-top:6px;
  font-size:14px;
}

/* tech */
.amd-tech{
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}

.tech-item{
  padding:26px 10px;
  border-radius:20px;
  text-align:center;

  background:
    linear-gradient(180deg,
      rgba(255,255,255,.75),
      rgba(245,247,250,.65)
    );

  backdrop-filter:blur(16px);
  opacity:.6;

  box-shadow:
    0 8px 24px rgba(0,0,0,.06),
    inset 0 1px 0 rgba(255,255,255,.9);
}

.tech-item i{
  font-size:22px;
  color:#9aa3b2;
  margin-bottom:10px;
}

.tech-item span{
  display:block;
  font-size:11px;
  letter-spacing:.08em;
  color:#9aa3b2;
}
/* =========================================================
       VF DETAIL – ROOT
    ========================================================= */

    .vf-detail-glass{
      --theme:#6b7cff;
      --theme-soft:color-mix(in srgb,var(--theme) 16%, white);
      --theme-shadow:color-mix(in srgb,var(--theme) 34%, transparent);
      position:relative;
      min-height:100vh;
      padding:120px 6vw;
      overflow:hidden;
      background:
        radial-gradient(900px 420px at 18% -10%, color-mix(in srgb,var(--theme) 18%, transparent), transparent 58%),
        radial-gradient(700px 420px at 92% 18%, rgba(255,255,255,.65), transparent 62%),
        linear-gradient(180deg,#f7f9fc,#eef2f7);
    }

    .vf-detail-glass::before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(15,23,42,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15,23,42,.045) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.5), transparent 78%);
    }

    .vf-detail-glass::after{
      content:"AIoT / ViDA.ai / Vision Intelligence";
      position:absolute;
      right:6vw;
      top:42px;
      font-size:11px;
      letter-spacing:.24em;
      color:#94a3b8;
      text-transform:uppercase;
    }

    /* ================= GRID ================= */

    .vf-detail-grid{
      position:relative;
      z-index:1;
      max-width:1280px;
      margin:auto;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:80px;
      align-items:start;
    }

    /* =========================================================
       LEFT – INFO
    ========================================================= */

    .vf-detail-info{
      position:relative;
    }

    .vf-detail-info h2{
      margin:18px 0 12px;
      font-size:34px;
      font-weight:800;
      color:#111827;
    }

    .vf-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 15px;
      border-radius:999px;
      font-size:12px;
      font-weight:700;
      letter-spacing:.08em;
      background:color-mix(in srgb,var(--theme) 18%, white);
      color:var(--theme);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.75);
    }

    .vf-badge::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--theme);
      box-shadow:0 0 16px var(--theme);
    }

    .vf-detail-info h2{
      margin:18px 0 12px;
      font-size:clamp(32px,4vw,48px);
      font-weight:800;
      letter-spacing:-.04em;
      line-height:1.12;
    }

    .vf-desc{
      margin:0;
      font-size:16px;
      line-height:1.8;
      color:#475569;
      max-width:560px;
    }

    /* =========================================================
       FEATURE BUTTONS
    ========================================================= */

    .vf-feature-buttons{
      margin:36px 0;
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:16px;
    }

    .vf-btn{
      position:relative;
      display:flex;
      align-items:center;
      gap:14px;
      min-height:76px;
      padding:16px 18px;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.75);
      cursor:pointer;
      overflow:hidden;
      background:
        linear-gradient(180deg,
          rgba(255,255,255,.98),
          rgba(255,255,255,.8)
        );
      backdrop-filter:blur(16px);
      box-shadow:
        0 10px 26px rgba(0,0,0,.08),
        inset 0 1px 0 rgba(255,255,255,.9);
      font-size:15px;
      font-weight:650;
      color:#1f2937;
      text-align:left;
      transition:
        transform .3s cubic-bezier(.4,0,.2,1),
        box-shadow .3s,
        background .3s,
        color .3s,
        border-color .3s;
    }

    .vf-btn::after{
      content:"";
      position:absolute;
      inset:auto 16px 10px 68px;
      height:3px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--theme),transparent);
      opacity:0;
      transform:scaleX(.25);
      transform-origin:left;
      transition:.32s ease;
    }

    .vf-btn i{
      width:38px;
      height:38px;
      border-radius:14px;
      display:flex;
      align-items:center;
      justify-content:center;
      font-size:15px;
      background:color-mix(in srgb,var(--theme) 18%,transparent);
      color:var(--theme);
      flex-shrink:0;
      transition:.3s;
    }

    .vf-btn span{
      line-height:1.35;
    }

    .vf-btn:hover{
      transform:translateY(-3px);
      box-shadow:0 18px 42px rgba(0,0,0,.12);
      border-color:color-mix(in srgb,var(--theme) 25%, white);
    }

    .vf-btn.is-active{
      background:
        linear-gradient(180deg,
          color-mix(in srgb,var(--theme) 92%,#fff),
          var(--theme)
        );
      color:#fff;
      box-shadow:0 18px 42px color-mix(in srgb,var(--theme) 46%, transparent);
    }

    .vf-btn.is-active::after{
      opacity:.8;
      transform:scaleX(1);
      background:rgba(255,255,255,.75);
    }

    .vf-btn.is-active i{
      background:rgba(255,255,255,.28);
      color:#fff;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.36);
    }

    /* =========================================================
       FEATURE INSIGHT CARD
    ========================================================= */

    .vf-feature-insight{
      margin-top:-12px;
      margin-bottom:34px;
      padding:22px 24px;
      border-radius:24px;
      background:rgba(255,255,255,.78);
      backdrop-filter:blur(18px);
      box-shadow:
        0 18px 44px rgba(15,23,42,.08),
        inset 0 1px 0 rgba(255,255,255,.9);
      border:1px solid rgba(255,255,255,.72);
    }

    .vf-feature-insight-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:12px;
    }

    .vf-feature-insight strong{
      display:flex;
      align-items:center;
      gap:10px;
      font-size:15px;
      color:#0f172a;
    }

    .vf-feature-insight strong i{
      color:var(--theme);
    }

    .vf-feature-level{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:5px 10px;
      border-radius:999px;
      font-size:11px;
      font-weight:800;
      color:var(--theme);
      background:color-mix(in srgb,var(--theme) 14%, white);
      white-space:nowrap;
    }

    .vf-feature-insight p{
      margin:0;
      color:#475569;
      font-size:14px;
      line-height:1.7;
    }

    .vf-progress-track{
      position:relative;
      margin-top:16px;
      height:7px;
      border-radius:99px;
      background:#e5e7eb;
      overflow:hidden;
    }

    .vf-progress-bar{
      width:0%;
      height:100%;
      border-radius:99px;
      background:linear-gradient(90deg,var(--theme),color-mix(in srgb,var(--theme) 40%, white));
      transition:width .55s cubic-bezier(.4,0,.2,1);
    }

    /* =========================================================
       USAGE GLASS
    ========================================================= */

    .vf-usage-glass{
      margin-top:36px;
      padding:26px 28px;
      border-radius:24px;
      background:rgba(255,255,255,.75);
      backdrop-filter:blur(18px);
      box-shadow:
        0 18px 46px rgba(0,0,0,.08),
        inset 0 1px 0 rgba(255,255,255,.9);
      border:1px solid rgba(255,255,255,.74);
    }

    .vf-usage-glass h4{
      display:flex;
      align-items:center;
      gap:10px;
      margin:0 0 16px;
      font-size:15px;
      font-weight:750;
    }

    .vf-usage-glass h4 i{
      color:var(--theme);
    }

    .vf-usage-glass ul{
      list-style:none;
      padding:0;
      margin:0;
    }

    .vf-usage-glass li{
      display:flex;
      align-items:center;
      gap:10px;
      margin:10px 0;
      color:#374151;
      font-size:14px;
    }

    .vf-usage-glass li i{
      color:var(--theme);
    }

    /* =========================================================
       RIGHT – VISUAL
    ========================================================= */

    .vf-detail-visual{
      position:relative;
    }

    .vf-live-card{
      position:relative;
      border-radius:28px;
      overflow:hidden;
      min-height:360px;
      box-shadow:0 30px 80px rgba(0,0,0,.25);
      background:#0f172a;
      transform:translateZ(0);
    }
 
.vf-live-video,
    .vf-live-fallback{
      width:100%;
      height:100%;
      min-height:360px;
      object-fit:cover;
      display:block;
      transition:opacity .35s ease, transform .35s ease;
    }

    .vf-live-fallback{
      position:absolute;
      inset:0;
      opacity:0;
      z-index:1;
    }

    .vf-live-card.show-fallback .vf-live-fallback{
      opacity:1;
    }

    .vf-live-card.show-fallback .vf-live-video{
      opacity:0;
    }

    .vf-live-card::after{
      content:"";
      position:absolute;
      inset:-100% 0 auto 0;
      height:100%;
      background:linear-gradient(
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,.14) 50%,
        rgba(255,255,255,0) 100%
      );
      animation:vfScan 3.5s linear infinite;
      pointer-events:none;
      z-index:2;
    }

    .vf-live-card::before{
      content:"";
      position:absolute;
      inset:0;
      z-index:2;
      pointer-events:none;
      background:
        linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px);
      background-size:52px 52px;
      opacity:.16;
      mix-blend-mode:screen;
    }

    /* .vf-live-card::after{
      content:"";
      position:absolute;
      left:-50%;
      top:0;
      width:42%;
      height:100%;
      z-index:3;
      background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
      transform:skewX(-18deg);
      animation:vfScan 4.8s ease-in-out infinite;
      pointer-events:none;
    } */

    @keyframes vfScan{
      0%,48%{ left:-55%; opacity:0; }
      58%{ opacity:.85; }
      78%{ left:115%; opacity:0; }
      100%{ left:115%; opacity:0; }
    }

    .vf-live-card.is-pulse{
      animation:vfLivePulse .55s ease;
    }

    .vf-live-card img{
      width:100%;
      min-height:360px;
      object-fit:cover;
      display:block;
      transition:opacity .35s ease,transform .35s ease;
    }

    .vf-live-overlay{
      position:absolute;
      z-index:4;
      left:20px;
      right:20px;
      bottom:20px;
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:16px;
      padding:18px 20px;
      border-radius:20px;
      background:rgba(15,23,42,.62);
      backdrop-filter:blur(16px);
      color:#fff;
      border:1px solid rgba(255,255,255,.18);
    }

    .vf-live-overlay strong{
      display:block;
      font-size:13px;
      letter-spacing:.12em;
      opacity:.9;
      text-transform:uppercase;
    }

    .vf-live-overlay span{
      font-size:14px;
      opacity:.92;
      display:block;
      margin-top:6px;
      line-height:1.45;
    }

    .vf-live-status{
      flex-shrink:0;
      display:flex;
      align-items:center;
      gap:8px;
      font-size:12px;
      font-weight:800;
      color:#d1fae5;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(16,185,129,.18);
      border:1px solid rgba(167,243,208,.22);
    }

    .vf-live-status::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:#22c55e;
      box-shadow:0 0 16px #22c55e;
      animation:vfBlink 1.2s infinite;
    }

    @keyframes vfBlink{
      0%,100%{ opacity:.35; transform:scale(.85); }
      50%{ opacity:1; transform:scale(1.15); }
    }

    .vf-live-card.is-pulse{
      animation:vfLivePulse .55s ease;
    }

    @keyframes vfLivePulse{
      0%{
        transform:scale(.985);
        filter:saturate(.8);
      }
      100%{
        transform:scale(1);
        filter:saturate(1);
      }
    }

    
    .vf-live-overlay{
      position:absolute;
      left:20px;
      bottom:20px;
      z-index:3;
      padding:18px 22px;
      border-radius:18px;
      background:rgba(20,20,20,.58);
      backdrop-filter:blur(14px);
      color:#fff;
    }

    .vf-live-overlay strong{
      display:block;
      font-size:13px;
      letter-spacing:.12em;
      opacity:.9;
    }

    .vf-live-overlay span{
      font-size:14px;
      opacity:.9;
      display:block;
      margin-top:6px;
    }

    /* =========================================================
       TECH TAGS
    ========================================================= */
    .vf-tech-cards{
      display:flex;
      gap:16px;
      margin-top:28px;
    }

    .vf-tech{
      flex:1;
      min-height:86px;
      padding:16px 12px;
      border-radius:18px;
      background:rgba(255,255,255,.72);
      backdrop-filter:blur(14px);
      text-align:center;
      font-size:13px;
      font-weight:650;
      color:#374151;
      box-shadow:0 10px 24px rgba(0,0,0,.08);
      border:1px solid rgba(255,255,255,.72);
      transition:.3s ease;
    }

    .vf-tech:hover{
      transform:translateY(-2px);
    }

    .vf-tech i{
      display:flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      margin:0 auto 8px;
      border-radius:12px;
      background:color-mix(in srgb,var(--theme) 14%, white);
      font-size:16px;
      color:var(--theme);
    }

    /* =========================================================
       MODULE SWITCH
    ========================================================= */

    .vf-module-switch-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
      margin-top:28px;
    }

    .vf-module-switch{
      display:flex;
      align-items:center;
      gap:12px;
      padding:15px 16px;
      border-radius:18px;
      cursor:pointer;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(255,255,255,.78);
      box-shadow:0 10px 24px rgba(15,23,42,.07);
      color:#334155;
      font-size:14px;
      font-weight:750;
      transition:.3s ease;
      user-select:none;
    }

    .vf-module-switch i{
      width:32px;
      height:32px;
      display:flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      color:var(--theme);
      background:color-mix(in srgb,var(--theme) 13%, white);
      transition:.3s ease;
    }

    .vf-module-switch:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 38px rgba(15,23,42,.12);
    }

    .vf-module-switch.is-active{
      color:#fff;
      background:linear-gradient(180deg,color-mix(in srgb,var(--theme) 88%,#fff),var(--theme));
      box-shadow:0 16px 36px var(--theme-shadow);
    }

    .vf-module-switch.is-active i{
      color:#fff;
      background:rgba(255,255,255,.24);
    }

    /* =========================================================
       RWD
    ========================================================= */

    @media(max-width:1100px){
      .vf-detail-grid{
        grid-template-columns:1fr;
        gap:64px;
      }
    }

    @media(max-width:720px){
      .vf-detail-glass{
        padding:88px 5vw;
      }

      .vf-detail-glass::after{
        display:none;
      }

      .vf-feature-buttons,
      .vf-module-switch-grid{
        grid-template-columns:1fr;
      }

      .vf-tech-cards{
        display:grid;
        grid-template-columns:1fr;
      }

      .vf-live-overlay{
        display:block;
      }

      .vf-live-status{
        width:max-content;
        margin-top:12px;
      }
    }

    /* ======================================================
      DFS CASE (video) 
    ====================================================== */
    .dfs-video-glass{
      padding: 96px 0;
      /* background: linear-gradient(180deg,#f7f9ff,#eef3ff); */
    }

    .dfs-case-glass{
      padding:90px 20px;
      background:linear-gradient(180deg,#f6f8ff,#eef3ff);
    }

    .dfs-case-header{
      text-align:center;
      max-width:980px;
      margin:0 auto 40px;
    }

    .dfs-video-header{
      text-align: center;
      max-width: 920px;
      margin: 0 auto 48px;
    }

    .dfs-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin: 0 auto 14px;
      padding:6px 14px;
      font-size:12px;
      border-radius:999px;
      background:rgba(255,255,255,.85);
      backdrop-filter:blur(14px);
      border:1px solid rgba(255,255,255,.6);
    }

    .dfs-video-title{
      margin:16px 0 10px;
      font-size:42px;
      font-weight:700;
      display:flex;
      align-items:center;
      gap:10px;
      justify-content: center;
    }

    .dfs-video-title i{
      font-size:22px;
      color:#6b8cff;
      align-items:center;
    }

    .dfs-video-title .t-dark{ color:#0f172a;  align-items:center; }
    .dfs-video-title .t-accent{
      align-items:center;
      background:linear-gradient(135deg,#4f7cff,#8fb3ff);
      -webkit-background-clip:text;
      -webkit-text-fill-color:transparent;
    }

    .dfs-video-desc{
      text-align: center;  
      margin: 12px auto 0;
      color:#5d6685;
      line-height: 1.7;
      font-size:15px;
      display:flex;
      gap:8px;
      align-items:flex-start;
      
    }

    .dfs-video-desc i{
      color: var(--accent, #6b7cff);
      margin-right: 6px;
    }

    /* Filters */
    .dfs-video-filters{
      margin-top:22px;
      display:flex;
      justify-content:center;
      gap:10px;
      flex-wrap:wrap;
    }

    .dfs-video-filters button{
      padding:8px 16px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.6);
      background:rgba(255,255,255,.75);
      backdrop-filter:blur(14px);
      cursor:pointer;
    }

    .dfs-video-filters button.is-active{
      background:linear-gradient(135deg,#4f7cff,#8fb3ff);
      color:#fff;
    }

    /* Slider */
    .dfs-video-slider{
      margin-top:36px;
      overflow-x:auto;
      scrollbar-width:thin;
      scrollbar-color: rgba(120,140,255,.55) transparent;
    }

    .dfs-video-slider::-webkit-scrollbar{
      height:8px;
    }

    .dfs-video-slider::-webkit-scrollbar-track{
      background:rgba(255,255,255,.35);
      border-radius:999px;
    }

    .dfs-video-slider::-webkit-scrollbar-thumb{
      background:linear-gradient(135deg,#6b8cff,#a5b4ff);
      border-radius:999px;
    }

    .dfs-video-track{
      display:flex;
      gap:24px;
      overflow-x:auto;  
      padding-bottom:10px; 
      /* iOS-like */
      scroll-snap-type: x proximity;
      -webkit-overflow-scrolling: touch;
      /* 隱藏原生 scrollbar */
      scrollbar-width: none;
      cursor: grab;
      user-select: none;
      -webkit-user-select: none;
      scroll-behavior: smooth;
    }

    .dfs-video-track::-webkit-scrollbar{
      display:none;
    }

    .dfs-video-track.is-dragging{
      cursor:grabbing;
    }

    .dfs-video-track.is-dragging .dfs-video-card{
      pointer-events:none; /* 防止誤點 */
    }

    .dfs-video-card{
      scroll-snap-align: start;
      min-width:320px;
      scroll-snap-align:start;
      background:rgba(255,255,255,.8);
      backdrop-filter:blur(18px);
      border-radius:22px;
      padding:14px;
      box-shadow:0 22px 50px rgba(60,90,160,.18);
      transition:.35s ease;
    }

    @media(max-width:768px){
      .dfs-video-track{
        scroll-snap-type:x mandatory;
      }

      .dfs-video-card{
        scroll-snap-align:start;
      }
    }

    .dfs-video-card:hover{
      transform:translateY(-6px);
    }

    .dfs-eyebrow{
      font-size:12px;
      letter-spacing:.18em;
      color:#7a86b6;
    }

    .dfs-title{
      font-size:42px;
      font-weight:700;
    }

    .dfs-title .t-dark{ color:#0f172a; }
    .dfs-title .t-accent{
      color: var(--accent);
      text-shadow: 0 6px 18px rgba(79, 114, 255, .45);
      background:linear-gradient(135deg,#4f7cff,#8fb3ff);
      -webkit-background-clip:text;
      -webkit-text-fill-color:transparent;
    }

    .dfs-case-group{
      margin-bottom:64px;
    }

    .dfs-group-title{
      font-size:20px;
      margin-bottom:20px;
      color:#1a2340;
    }

    /* Grid */
    .dfs-case-grid{
      display:grid;
      grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
      gap:24px;
    }

    /* Card */
    .dfs-case-card{
      background:rgba(255,255,255,.75);
      backdrop-filter:blur(18px);
      border-radius:22px;
      padding:14px;
      box-shadow:0 20px 45px rgba(50,80,150,.18);
      transition:.35s ease;
    }

    .dfs-case-card:hover{
      transform:translateY(-6px);
      box-shadow:0 30px 70px rgba(50,90,180,.3);
    }

    .dfs-thumb{
      position:relative;
      border-radius:16px;
      overflow:hidden;
    }

    .dfs-thumb img{
      width:100%;
      display:block;
    }

    .dfs-video-thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      display:block;
      position:relative;
      z-index:1;
    }

    /* Thumb */
    .dfs-video-thumb{ 
      position:relative;
      aspect-ratio:16/9;
      border-radius:18px;
      overflow:hidden;
      background:#e9eeff;
    }

    .dfs-video-thumb::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(
        to bottom,
        rgba(0,0,0,0) 0%,
        rgba(0,0,0,.25) 100%
      );
      opacity:0;
      transition:.35s cubic-bezier(.4,0,.2,1);
    }

    .dfs-video-thumb .dfs-play{
      opacity:.85;
      transform:scale(.92);
      transition:.35s cubic-bezier(.4,0,.2,1);
    }

    .dfs-video-card:hover .dfs-video-thumb::after{
      opacity:1;
    }

    .dfs-video-card:hover .dfs-play{
      opacity:1;
      transform:scale(1);
    }

    /* YouTube thumbnail */
    .youtube-thumb{
      background-size:cover;
      background-position:center;
    }

    .dfs-video-thumb img{ width:100%; display:block; }


    /* Play button */
    .dfs-play{
      position:absolute;
      inset:0;
      display:flex;
      align-items:center;
      justify-content:center;
      z-index:2;
    }

    .dfs-play i{
      font-size:22px;
      width:54px;
      height:54px;
      border-radius:50%;
      background:rgba(0,0,0,.55);
      color:#fff;
      display:flex;
      align-items:center;
      justify-content:center;
    }

    .dfs-video-thumb:hover .dfs-play{ opacity:1; }
    .dfs-thumb:hover .dfs-play{
      opacity:1;
    }

    .dfs-case-card h4{
      margin:14px 0 6px;
      font-size:15px;
    }

    .dfs-case-card p{
      font-size:13px;
      color:#5f678a;
    }

    .dfs-duration{
      position:absolute;
      bottom:8px;
      right:10px;
      background:rgba(0,0,0,.55);
      color:#fff;
      font-size:12px;
      padding:2px 6px;
      border-radius:6px;
    }

    /* Lightbox */
    .dfs-video-lightbox{
      position: fixed;
      inset: 0;
      background: rgba(10,15,30,.55);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 9999;
    }

    .dfs-video-lightbox.open{ display:flex; }

    .dfs-video-modal{
      position: relative;
      width: min(90vw, 960px);
      aspect-ratio: 16 / 9;
      background: #000;
      border-radius: 16px;
      overflow: hidden;
      z-index: 2;
    }

    .dfs-video-modal iframe{
      width: 100%;
      height: 100%;
      border: 0;
      pointer-events: auto;
    }

    .dfs-video-close{
      position: absolute;
      top: -14px;
      right: -14px;
      width: 36px;
      height: 36px;
      border-radius: 999px;
      background: rgba(255,255,255,.95);
      color: #111;
      font-size: 18px;
      border: none;
      cursor: pointer;
      z-index: 5;
      box-shadow: 0 10px 30px rgba(0,0,0,.35);
    }

    /* 讓 overlay 本身可以被點 */
    .dfs-video-lightbox::before{
      content:"";
      position:absolute;
      inset:0;
    }

    /* ======================================================
      DFS VIDEO – GLASS UPGRADE
    ====================================================== */

    .dfs-video-card{
      position:relative;
      overflow:hidden;
      transition:
        transform .45s cubic-bezier(.22,.61,.36,1),
        opacity   .35s ease;
    }

    .dfs-video-card.is-hidden{
      opacity:0;
      pointer-events:none;
      transform:translateX(24px) scale(.96);
    }

    /* DFS Video Card – list style reset */
    .dfs-video-card ul{
      list-style: none;
      padding-left: 0;
      margin: 0;
    }

    .dfs-video-card li{
      list-style: none;
      padding-left: 0;
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.55;
      color: #4b5563; /* slate-600 */
      font-size: .92rem;
    }

    .dfs-video-card li i{
      margin-top: 3px;
      color: var(--accent, #6b7cff);
      flex-shrink: 0;
    }

    /* Hover 微浮 */
    .dfs-video-card:hover{
      transform:translateY(-6px) scale(1.01);
    }

    /* 播放鍵 */
    .dfs-play{
      pointer-events:auto;
    }

    /* GIF 播放中提示 */
    .dfs-video-card.is-playing::after{
      content:"GIF PLAYING";
      position:absolute;
      top:12px;
      left:12px;
      font-size:11px;
      padding:4px 8px;
      border-radius:999px;
      background:rgba(0,0,0,.55);
      color:#fff;
      letter-spacing:.08em;
    }

    /* Mobile 縮小卡片 */
    @media(max-width:768px){
      .dfs-video-card{
        min-width:280px;
      }
    }

    /* Filter 隱藏 */
    .dfs-video-card.is-hidden{
      display: none !important;
      opacity:0;
      pointer-events:none;
      width:0 !important;
      margin:0 !important;
      transform:scale(.94);
      margin-right:-320px; /* 卡片寬度 + gap */
      transition:
        opacity .25s ease,
        transform .25s ease,
        margin .35s ease;
    }

    /* YouTube 縮圖顯示 */
    .dfs-video-thumb.is-youtube{
      background-size:cover;
      background-position:center;
    }

    .dfs-video-thumb.is-youtube img{
      display:none;
    }

    /* ===============================
      YouTube Fallback Glass UI
    ================================ */
    .dfs-youtube-fallback{
      position:absolute;
      inset:0;
      display:none;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:14px;
      text-align:center;

      background:rgba(0,0,0,.55);
      backdrop-filter:blur(14px);
      -webkit-backdrop-filter:blur(14px);
      color:#fff;
      z-index:3;
    }

    .dfs-youtube-fallback i{
      font-size:56px;
      color:#ff2d2d;
    }

    .dfs-youtube-fallback h3{
      font-size:1.2rem;
      font-weight:600;
    }

    .dfs-youtube-fallback p{
      font-size:.9rem;
      opacity:.85;
      max-width:280px;
      line-height:1.5;
    }

    .dfs-youtube-btn{
      margin-top:6px;
      padding:10px 22px;
      border-radius:999px;
      background:#ff2d2d;
      color:#fff;
      font-size:.9rem;
      font-weight:600;
      text-decoration:none;
      transition:.25s;
    }

    .dfs-youtube-btn:hover{
      background:#ff4545;
      transform:translateY(-1px);
    }

    /* 顯示狀態 */
    .dfs-video-lightbox.show-fallback .dfs-youtube-fallback{
      display:flex;
    }

    .dfs-video-lightbox.show-fallback iframe{
      display:none;
    }

    /* ===============================
      GIF Live Badge
    ================================ */
    .dfs-video-card[data-media="gif"] .dfs-video-thumb::before{
      content:"LIVE";
      position:absolute;
      top:10px;
      left:10px;
      padding:4px 10px;
      font-size:.65rem;
      font-weight:700;
      letter-spacing:.08em;
      color:#fff;
      background:#ff3b30;
      border-radius:999px;
      opacity:0;
      transform:translateY(-4px);
      transition:.3s cubic-bezier(.4,0,.2,1);
    }

    .dfs-video-card[data-media="gif"]:hover .dfs-video-thumb::before{
      opacity:1;
      transform:translateY(0);
    }

    /* scrollbar */
    .dfs-scrollbar{
      position:relative;
      height:4px;
      background:rgba(255,255,255,.25);
      border-radius:999px;
      margin-top:14px;
      overflow:hidden;
    }

    .dfs-scroll-thumb{
      position:absolute;
      height:100%;
      width:20%;
      background:rgba(255,255,255,.75);
      border-radius:999px;
      backdrop-filter:blur(6px);
      transition:transform .1s linear;
    }