:root{
  --dentone-purple:#b54da8;
  --ink:#161619;
  --muted:#69696f;
  --line:#ececef;
}

.gallery-home{background:#fff;color:var(--ink);}
.gallery-shell{width:min(1180px,calc(100% - 40px));margin:0 auto;}
.gallery-intro{padding:150px 0 54px;}
.gallery-intro h1{font-size:clamp(44px,6vw,86px);line-height:.98;margin:12px 0 22px;letter-spacing:-.045em;}
.gallery-intro>div>p:last-child{font-size:clamp(18px,2vw,24px);line-height:1.5;max-width:760px;color:var(--muted);}
.gallery-cases{padding:20px 0 100px;}
.case-card{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(300px,.6fr);text-decoration:none;color:inherit;border-top:1px solid var(--line);padding-top:26px;gap:38px;align-items:center;}
.case-card-image{overflow:hidden;border-radius:24px;background:#f4f4f5;}
.case-card-image img{display:block;width:100%;height:auto;transition:transform .5s ease;}
.case-card:hover .case-card-image img{transform:scale(1.015);}
.case-card-copy h2{font-size:clamp(38px,4vw,62px);margin:10px 0 16px;letter-spacing:-.035em;}
.case-card-copy p{font-size:18px;line-height:1.55;color:var(--muted);}
.case-link{display:inline-block;margin-top:22px;font-weight:800;letter-spacing:.04em;color:var(--dentone-purple);}

.case-page{margin:0;background:#fff;color:var(--ink);}
.case-topbar{position:sticky;top:0;z-index:30;height:74px;display:flex;align-items:center;padding:0 max(18px,env(safe-area-inset-left));background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px);}
.home-button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;color:var(--dentone-purple);font-size:14px;font-weight:800;letter-spacing:.025em;padding:12px 16px;border:1px solid rgba(181,77,168,.22);border-radius:999px;background:#fff;}
.home-button:active{transform:scale(.985);}

.case-stream{width:100%;margin:0;padding:0;}
.photo-frame{display:block;width:100%;border:0;margin:0 0 6px;padding:0;background:#fff;cursor:zoom-in;}
.photo-frame img{display:block;width:100%;height:auto;margin:0;padding:0;}

.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.96);display:none;align-items:center;justify-content:center;}
.lightbox.is-open{display:flex;}
.lightbox-image{max-width:96vw;max-height:92vh;object-fit:contain;}
.lightbox-close,.lightbox-prev,.lightbox-next{position:absolute;border:0;background:rgba(255,255,255,.13);color:#fff;cursor:pointer;}
.lightbox-close{top:max(16px,env(safe-area-inset-top));right:16px;width:46px;height:46px;border-radius:50%;font-size:30px;line-height:1;}
.lightbox-prev,.lightbox-next{top:50%;transform:translateY(-50%);width:46px;height:64px;border-radius:14px;font-size:42px;line-height:1;}
.lightbox-prev{left:12px}.lightbox-next{right:12px}

@media (min-width: 769px){
  .case-stream{width:min(1320px,calc(100% - 64px));margin:32px auto 80px;}
  .photo-frame{margin-bottom:18px;border-radius:20px;overflow:hidden;background:#f5f5f5;}
  .photo-frame img{border-radius:20px;}
}

@media (max-width: 768px){
  .gallery-shell{width:min(100% - 28px,1180px);}
  .gallery-intro{padding:112px 0 38px;}
  .gallery-cases{padding:10px 0 60px;}
  .case-card{grid-template-columns:1fr;gap:22px;}
  .case-card-image{border-radius:18px;}
  .case-card-copy{padding-bottom:18px;}
  .case-topbar{height:70px;}
  .photo-frame{margin-bottom:6px;}
}