/* ========== 基礎 ========== */
*{margin:0;padding:0;box-sizing:border-box}
html,body{margin:0;padding:0}
body>*:first-child{margin-top:0;padding-top:0}

/* 變數（原樣保留） */
:root{ --topbar-h:73px; --cardw:774px; --peek:90px; }
@media (max-width:768px){ :root{ --topbar-h:90px; } }
@media (max-width:1200px){ :root{ --peek:70px } }
@media (max-width:768px){  :root{ --peek:0px } }

/* 背景與字型（保留原連結與設定） */
body{
  background:#000 url(https://www.dell.com/community/assets/community/687062f5-603c-4f5f-ab9d-31aa7cacb376/fantasylandscapebackgroundorie-1947d30b-ef7b-4ed5-bae9-b2b8f9e3d52a-2060693140.jpg) center top/cover no-repeat fixed;
  color:#fff; font-family:sans-serif;
  padding-top:var(--topbar-h); /* 讓內容從 topbar 下方開始 */
}

/* 內文錨點避免被頂欄蓋住 */
section,[id]{ scroll-margin-top: calc(var(--topbar-h) + 12px); }

/* ========== Topbar（固定；外連底圖 + 龍影） ========== */
.topbar{
  position:fixed; top:0; left:0; right:0; height:var(--topbar-h);
  z-index:9999; display:flex; align-items:center; justify-content:flex-end; gap:36px; padding-right:20px;
  overflow:hidden;
  background:
    url('https://www.dell.com/community/assets/community/687062f5-603c-4f5f-ab9d-31aa7cacb376/-0ef04a6e-b39a-415c-9739-824e956f29c3-1475827.jpg') center/cover no-repeat,
    linear-gradient(180deg,#5a0c0c 0%, #2a0a0a 100%) !important;
  border-top:2px solid rgba(213,169,90,.9);
  border-bottom:2px solid rgba(213,169,90,.9);
  box-shadow:0 8px 20px rgba(0,0,0,.55);
}

/* 龍影：單向循環滑行 */
.topbar::before{
  content: ""; position:absolute; top:0; height:100%;
  width: clamp(800px, 80vw, 2000px);
  left: -30%;
  background: url('https://www.dell.com/community/assets/community/687062f5-603c-4f5f-ab9d-31aa7cacb376/1600x180-304feb91-1470-4f89-b12a-b3cd5432f89c-1346295791.png')
              no-repeat left center / contain;
  opacity:.32; filter: drop-shadow(0 2px 6px rgba(0,0,0,.35));
  animation: dragon-loop 20s linear infinite;
  pointer-events:none; z-index:0;
}
@keyframes dragon-loop{
  0%      { transform: translateX(-120%); }
  49.999% { transform: translateX(160%); }
  50%     { transform: translateX(-120%); }
  100%    { transform: translateX(160%); }
}

/* 導覽項（圖片版） */
.navbar-img{ position:relative; z-index:2; }
.navbar-img a{ position:relative; display:inline-flex; align-items:center; justify-content:center; text-decoration:none; }
.navbar-img a img{ height:32px; object-fit:contain; filter:drop-shadow(0 1px 0 #000); }

/* 手機：顯示文字 */
@media (max-width:767.98px){
  .navbar-img a img{ display:none; }
  .navbar-img a::after{
    content:attr(data-label);
    color:#ffe9b0; font-weight:900; font-size:20px;
    text-shadow:0 2px 0 #000,0 0 6px rgba(0,0,0,.6),0 0 12px rgba(213,169,90,.5);
    letter-spacing:.06em; padding:6px 10px; border-radius:6px;
  }
}

/* ========== Hero 影片區 ========== */
.video-container{
  position: relative;
  width: 100%;
  margin-top: var(--topbar-h); /* 往下推，避開 topbar */
  overflow: hidden;
}

/* 桌機（≥768px）：依比例展開 */
@media (min-width: 768px){
  .video-container{
    aspect-ratio: 1920 / 1596; /* 原始比例 */
    height: auto;              /* 自動依比例延伸 */
  }
  .video-container video{
    width: 100%;
    height: 100%;
    object-fit: contain;       /* 不裁切，完整顯示影片 */
    object-position: center;
    display: block;
  }
}

/* 手機（≤767.98px）：一屏滿版（扣掉 topbar） */
@media (max-width: 767.98px){
  .video-container{
    height: calc(100dvh - var(--topbar-h));
    min-height: calc(100dvh - var(--topbar-h));
    aspect-ratio: auto; /* 取消比例限制，強制滿版 */
  }
  .video-container video{
    width: 100%;
    height: 100%;
    object-fit: cover; /* 填滿舞台，可能微裁切 */
    object-position: center;
    display: block;
  }
}


/* CTA 按鈕（統一一條規則） */
.cta-button{
  position:absolute; left:50%; transform:translateX(-50%);
  bottom:10px; z-index:1000; display:block;
  width:clamp(200px, 42vw, 420px);
  padding:0 !important; background:transparent !important; border:0 !important; box-shadow:none !important;
  border-radius:16px; overflow:hidden;
}
.cta-anim{ position:relative; width:100%; aspect-ratio:1/1; }
.layer{ position:absolute; inset:0; width:100%; height:100%; object-fit:contain; will-change:transform; }
.label{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:90%; height:auto; }

/* CTA 旋轉動畫（原速率） */
.spin-cw{ animation:spin-cw linear infinite; }
.spin-ccw{ animation:spin-ccw linear infinite; }
.fast{ animation-duration:4s; } .medium{ animation-duration:6s; } .slow{ animation-duration:8s; } .slower{ animation-duration:12s; }
@keyframes spin-cw{ to{ transform:rotate(360deg); } }
@keyframes spin-ccw{ to{ transform:rotate(-360deg); } }

/* ========== 輪播（保持原尺寸與露出寬） ========== */
.glider-contain{
  position:relative; max-width:2400px; margin:0 auto;
  padding:28px var(--peek); overflow:hidden;
}
#glider1{ --arrow-size:48px; --arrow-gap:16px; --cardw-actual:min(var(--cardw), 100%); }
.glider-prev,.glider-next{
  position:absolute; top:50%; transform:translateY(-50%);
  width:48px; height:48px; background:transparent; border:0;
  z-index:9; display:flex; align-items:center; justify-content:center; pointer-events:auto; cursor:pointer;
}
.glider-prev{ left:6px; } .glider-next{ right:6px; }
.glider-prev img,.glider-next img{ width:100%; height:100%; object-fit:contain; pointer-events:none; }
.arrow-left{ transform:rotate(180deg); }

@media (min-width:768px){
  .glider-prev,.glider-next{ top:50%; transform:translateY(-50%); width:var(--arrow-size); height:var(--arrow-size); left:auto; right:auto; }
  .glider-prev{ left:calc(50% - (var(--cardw-actual)/2) - var(--arrow-gap) - var(--arrow-size)); }
  .glider-next{ left:calc(50% + (var(--cardw-actual)/2) + var(--arrow-gap)); }
}
@media (max-width:767.98px){
  .glider-prev{ left:6px; }
  .glider-next{ right:6px; }
}

/* Swiper 容器 */
#glider1.swiper{ width:100%; max-width:1200px; margin:0 auto; overflow:visible; }
#glider1 .swiper-wrapper{ align-items:center; overflow:visible; }

/* 卡片寬 */
#glider1 .swiper-slide{
  width:min(var(--cardw), 100%);
  display:flex; align-items:center; justify-content:center;
  position:relative; z-index:1;
}
#glider1 .swiper-slide-prev, #glider1 .swiper-slide-next{ z-index:3; }
#glider1 .swiper-slide-active{ z-index:6; }

/* 圖片效果與放大 */
#glider1 .swiper-slide img{
  width:100%; height:auto; border-radius:14px; object-fit:cover; display:block;
  box-shadow:0 10px 24px rgba(0,0,0,.35);
  transition:transform .28s ease, filter .28s ease, opacity .28s ease;
  transform-origin:center bottom;
  filter:brightness(.40) saturate(.85); opacity:.82; transform:scale(.92);
}
#glider1 .swiper-slide-prev img, #glider1 .swiper-slide-next img{
  filter:brightness(.52) saturate(.9); opacity:.9; transform:scale(.96);
}
#glider1 .swiper-slide-active img{
  filter:none !important; opacity:1 !important; transform:scale(1.10) !important;
}

/* 手機：單張鋪滿，不暗不縮 */
@media (max-width:767.98px){
  .glider-contain{ padding:16px 0; }
  #glider1 .swiper-slide{ width:100vw !important; }
  #glider1 .swiper-slide img{
    width:100vw !important; height:auto !important;
    filter:none !important; opacity:1 !important; transform:none !important;
    transform-origin:center center !important;
  }
}

/* ========== Lightbox ========== */
.lightbox{ position:fixed; inset:0; display:none; place-items:center; background:rgba(0,0,0,.8); z-index:99999; padding:2vw; }
.lightbox.open{ display:grid; }
.lightbox img{ max-width:96vw; max-height:96vh; width:auto; height:auto; border-radius:14px; box-shadow:0 20px 60px rgba(0,0,0,.6); }

/* ========== 版身其他 ========== */
.full-width-img{ width:100% }
.full-width-img img{ width:180vw; max-width:100%; height:auto; display:block }

.anchor-offset{ position:relative; top:-80px; visibility:hidden; height:0 }

.hero{ position:relative; margin-top:0; }
.hero video{ width:100%; height:auto; display:block; }

.landing-footer{ width:100%; background:#1e1416; padding:80px 16px 100px; position:relative; overflow:hidden }
.landing-footer .wrap{ max-width:1500px; min-height:600px; margin:0 auto; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:28px }
.lf-icon{ width:108px; height:108px; border-radius:20px; object-fit:cover; box-shadow:0 6px 18px rgba(0,0,0,.35) }
.lf-btns{ display:flex; gap:22px; flex-wrap:wrap; justify-content:center }
.lf-legal{ max-width:760px; text-align:center; color:rgba(255,255,255,.7); line-height:1.8; font-size:14px; margin-top:10px }
.lf-copy{ text-align:center; color:rgba(255,255,255,.65); margin-top:14px; font-size:13px }

/* --- 手機：一屏高，扣掉 topbar --- */
@media (max-width: 767.98px){
  .video-container{
    position: relative;
    width: 100%;
    height: calc(100dvh - var(--topbar-h));
    margin-top: 0;
    overflow: hidden;
  }
  .video-container video{
    width: 100%;
    height: 100%;
    object-fit: cover;   /* 鋪滿一屏，必要時裁切 */
    object-position: center;
    display: block;
  }
}

/* --- 桌機：滿版影片 --- */
@media (min-width: 768px){
  .video-container{
    position: relative;
    width: 100vw;
    height: calc(250vh - var(--topbar-h));   /* 妳自己要的高度比例 */
    margin: 0;
    margin-left: calc(50% - 50vw);           /* 滿寬脫離版心 */
    overflow: hidden;
  }
  .video-container video{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;                        /* 充滿寬與高，但會裁切 */
    object-position: center;
    display: block;
  }
}

/* 手機：topbar 跟著捲動，不固定；影片滿一屏 */
@media (max-width: 767.98px){
  .topbar{
    position: relative !important;  /* 不固定，會跟著內容一起捲 */
    top: auto; left: auto; right: auto;
  }
  body{
    padding-top: 0 !important;      /* 既然不 fixed，就不要再預留空間 */
  }
  .video-container{
    width: 100% !important;
    margin: 0 !important;
    height: 100dvh !important;      /* 影片滿一屏；不再扣 topbar 高度 */
    min-height: 100dvh !important;
    overflow: hidden;
  }
  .video-container video{
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;               /* 充滿舞台（會微裁切） */
    object-position: center;
    display: block;
  }
}