/* Case-system-only styles. Kept separate to avoid changing unrelated site design. */
.project-archive{background:var(--bg);min-height:100vh;padding:120px 0 80px}
.project-archive .project-page-inner,.project-detail .project-page-inner{width:min(1440px,100%);margin:0 auto;padding:0 clamp(24px,4vw,64px)}
.project-filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.project-filters a{padding:9px 18px;border:1px solid var(--line);color:var(--ink);font-size:13px;letter-spacing:.06em}
.project-filters a.is-active{border-color:var(--gold);background:var(--gold);color:#fff}
.project-category-heading{margin:0 0 36px}.project-category-heading p{margin:0 0 8px;color:var(--gold);font-size:12px;letter-spacing:.18em;text-transform:uppercase}.project-category-heading h1{margin:0;font-family:var(--serif-cn);font-size:clamp(28px,4vw,44px);font-weight:400}
.project-category-back{display:inline-flex;align-items:center;gap:9px;margin:0 0 24px;color:var(--ink-soft);font-size:11px;letter-spacing:.1em;line-height:1;transition:color .2s ease}
.project-category-back-mark{position:relative;width:18px;height:1px;background:var(--gold);transition:transform .2s ease}
.project-category-back-mark::before{content:"";position:absolute;left:0;top:0;width:5px;height:5px;border-bottom:1px solid var(--gold);border-left:1px solid var(--gold);transform:translateY(-2px) rotate(45deg)}
.project-category-back:hover{color:var(--gold)}.project-category-back:hover .project-category-back-mark{transform:translateX(-2px)}
.project-category-back:focus-visible{outline:1px solid var(--gold);outline-offset:5px}
.project-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(12px,1.5vw,22px)}
.project-card{min-width:0;height:100%}.project-card a{display:flex;flex-direction:column;height:100%;color:var(--ink)}
.project-card-media{display:block;aspect-ratio:3/2;overflow:hidden;background:#EDE6D7}
.project-placeholder-media{background:#eeeae2}
.project-card-media img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s ease}
.project-card a:hover .project-card-media img{transform:scale(1.025)}
.project-card-title{display:block;min-height:58px;padding:12px 2px 18px;font-family:var(--serif-cn);font-size:17px;line-height:1.45}
.project-card[hidden]{display:none!important}.project-empty{text-align:center;color:var(--ink-soft);padding:70px 0}
.project-detail{padding-top:110px}
.project-back{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  margin-bottom:36px;
  padding:0 4px 0 0;
  color:var(--ink-soft);
  font-size:11px;
  font-weight:500;
  letter-spacing:.2em;
  line-height:1;
  text-transform:uppercase;
  transition:color .25s ease;
}
.project-back-mark{
  position:relative;
  display:block;
  width:34px;
  height:1px;
  background:var(--gold);
  transform-origin:left center;
  transition:transform .25s ease;
}
.project-back-mark::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:7px;
  height:7px;
  border-bottom:1px solid var(--gold);
  border-left:1px solid var(--gold);
  transform:translateY(-3px) rotate(45deg);
}
.project-back-label{position:relative}
.project-back-label::after{
  content:"";
  position:absolute;
  right:.2em;
  bottom:-6px;
  left:0;
  height:1px;
  background:currentColor;
  opacity:0;
  transform:scaleX(.7);
  transform-origin:left center;
  transition:opacity .25s ease,transform .25s ease;
}
.project-back:hover{color:var(--ink)}
.project-back:hover .project-back-mark{transform:translateX(-3px)}
.project-back:hover .project-back-label::after{opacity:.45;transform:scaleX(1)}
.project-back:focus-visible{outline:1px solid var(--gold);outline-offset:5px}
@media(prefers-reduced-motion:reduce){.project-back,.project-back-mark,.project-back-label::after,.project-category-back,.project-category-back-mark{transition:none}}
.project-detail-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(500px,.95fr);gap:clamp(28px,4vw,64px);align-items:start}
.project-media-column{min-width:0;display:grid;grid-template-columns:90px minmax(0,1fr);gap:12px;align-items:start}.project-main-image{aspect-ratio:3/2;margin:0;background:#EDE6D7;display:flex;align-items:center;justify-content:center;padding:clamp(12px,2vw,28px);box-sizing:border-box;overflow:hidden}
.project-main-image img{width:100%;height:100%;display:block;object-fit:contain}
.project-thumbnails{display:grid;grid-template-columns:1fr;gap:10px;margin:0}
.project-thumbnail{padding:0;border:1px solid transparent;background:#EDE6D7;aspect-ratio:3/2;overflow:hidden;opacity:.72;transition:opacity .2s,border-color .2s}
.project-thumbnail img{width:100%;height:100%;object-fit:cover}.project-thumbnail.is-active{border-color:var(--gold);opacity:1}
.project-thumbnail-empty{display:block;opacity:.55;background:#eeeae2;cursor:default}
.project-detail-layout .project-header{display:block;position:sticky;top:110px;margin:0;padding-top:10px}
.project-detail-layout .project-meta{margin:0 0 18px}.project-detail-layout .project-title{margin:0 0 30px}
.project-specs{margin:0 0 30px;border-top:1px solid var(--line)}.project-specs>div{display:grid;grid-template-columns:92px 1fr;gap:18px;padding:13px 0;border-bottom:1px solid var(--line)}
.project-specs dt{color:var(--ink-soft);font-size:13px}.project-specs dd{margin:0;font-size:14px;color:var(--ink)}
.project-description h2{font-family:var(--serif-cn);font-weight:400;font-size:18px;margin:0 0 10px}.project-description p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.9}
.project-detail-images{padding:0!important;margin-top:clamp(56px,8vw,100px);display:grid;gap:20px}.project-detail-images figure{margin:0}.project-detail-images img{width:100%;height:auto}
.related-projects{margin-top:clamp(64px,9vw,120px);padding-top:36px;border-top:1px solid var(--line)}
.related-projects>h2{margin:0 0 28px;font-family:var(--serif-cn);font-size:clamp(24px,3vw,36px);font-weight:400}
.project-placeholder-gallery .project-main-image{width:100%}
@media(max-width:900px){.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:768px){.project-archive{padding-top:96px}.project-detail-layout{grid-template-columns:1fr}.project-detail-layout .project-header{position:static;order:-1}.project-filters{gap:8px}.project-filters a{padding:8px 12px}.project-media-column{grid-template-columns:1fr}.project-thumbnails{grid-template-columns:repeat(3,minmax(76px,1fr));grid-row:2;gap:7px;overflow-x:auto}.project-main-image{grid-row:1;padding:12px}.project-specs>div{grid-template-columns:82px 1fr}}
@media(max-width:520px){.project-grid{grid-template-columns:1fr}}


/* Seeded real case content: restrained product-copy treatment matching the approved reference. */
.project-case-subtitle{
  margin:-10px 0 28px;
  color:var(--gold);
  font-family:var(--serif-cn);
  font-size:17px;
  line-height:1.6;
  letter-spacing:.08em;
}
.project-case-specs{margin-top:0}
.project-case-specs>div{grid-template-columns:76px 1fr}
.project-case-specs dt{color:var(--ink-soft)}
.project-case-specs dd{font-family:var(--serif-cn);font-size:15px;letter-spacing:.03em}
@media(min-width:1101px){
  .project-case-specs>div{grid-template-columns:60px 1fr;gap:12px}
  .project-case-specs dd{white-space:nowrap;font-size:14px;letter-spacing:0}
}
@media(max-width:768px){
  .project-case-subtitle{margin:-4px 0 22px;font-size:16px}
  .project-case-specs>div{grid-template-columns:68px 1fr}
}


/* Seeded jewelry case: match the approved reference proportions without affecting empty placeholders. */
.project-detail--seeded .project-detail-layout{
  grid-template-columns:minmax(0,1.7fr) minmax(360px,.88fr);
  gap:clamp(44px,5vw,78px);
}
.project-detail--seeded .project-main-image{
  padding:0;
  background:#eee7d8;
  aspect-ratio:5/3;
}
.project-detail--seeded .project-main-image img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.project-detail--seeded .project-thumbnails{
  gap:14px;
}
.project-detail--seeded .project-thumbnail{
  background:#eee7d8;
}
.project-detail--seeded .project-title{
  font-size:clamp(34px,3.3vw,52px);
  line-height:1.26;
  letter-spacing:.025em;
  margin-bottom:22px;
}
.project-detail--seeded .project-case-subtitle{
  margin:0 0 30px;
  font-size:16px;
  line-height:1.6;
  letter-spacing:.08em;
}
.project-detail--seeded .project-header{
  padding-top:18px;
}
.project-detail--seeded .project-meta{
  margin-bottom:16px;
}
.project-detail--seeded .project-case-specs{
  margin-top:0;
}
.project-detail--seeded .project-case-specs>div{
  grid-template-columns:72px 1fr;
  gap:16px;
  padding:14px 0;
}
.project-detail--seeded .project-case-specs dt{
  font-size:13px;
}
.project-detail--seeded .project-case-specs dd{
  font-size:15px;
  line-height:1.6;
}
@media(max-width:1100px){
  .project-detail--seeded .project-detail-layout{
    grid-template-columns:minmax(0,1.5fr) minmax(320px,.9fr);
    gap:36px;
  }
  .project-detail--seeded .project-title{
    font-size:clamp(32px,4vw,44px);
  }
}
@media(max-width:768px){
  .project-detail--seeded .project-detail-layout{
    grid-template-columns:1fr;
    gap:34px;
  }
  .project-detail--seeded .project-main-image{
    aspect-ratio:4/3;
  }
  .project-detail--seeded .project-title{
    font-size:clamp(30px,9vw,40px);
  }
  .project-detail--seeded .project-case-subtitle{
    font-size:15px;
    margin-bottom:22px;
  }
}


/* Final seeded jewelry-case typography refinement. */
@media(min-width:1101px){
  .project-detail--seeded .project-detail-layout{
    grid-template-columns:minmax(0,1.42fr) minmax(560px,1fr);
    gap:clamp(32px,3.2vw,52px);
  }
  .project-detail--seeded .project-title{
    font-size:clamp(30px,2.35vw,38px);
    line-height:1.18;
    letter-spacing:.01em;
    white-space:nowrap;
    margin-bottom:18px;
  }
  .project-detail--seeded .project-case-subtitle{
    white-space:nowrap;
    font-size:clamp(14px,1.05vw,15.5px);
    letter-spacing:.02em;
  }
  .project-detail--seeded .project-case-specs>div{
    grid-template-columns:60px 1fr;
    gap:12px;
  }
  .project-detail--seeded .project-case-specs dd{
    white-space:nowrap;
    font-size:14px;
    letter-spacing:0;
  }
}
@media(max-width:1100px){
  .project-detail--seeded .project-title{
    white-space:normal;
  }
}


/* Qianyu product studio treatment for uploaded white-background product shots. */
.project-detail--seeded .project-thumbnail--studio,
.project-detail--seeded .project-main-image.is-studio{
  background:#f3eee5;
}
.project-detail--seeded .project-thumbnail--studio img{
  mix-blend-mode:multiply;
}
.project-detail--seeded .project-main-image.is-studio img{
  mix-blend-mode:multiply;
  filter:drop-shadow(0 18px 28px rgba(75,63,48,.10));
}
.project-detail--seeded .project-main-image.is-studio{
  background:
    radial-gradient(ellipse at 50% 62%, rgba(191,170,142,.13) 0, rgba(191,170,142,0) 46%),
    #f3eee5;
}
.project-detail--seeded .project-main-image.is-studio.studio-tone-soft-greige{
  background:
    radial-gradient(ellipse at 50% 62%, rgba(152,145,136,.11) 0, rgba(152,145,136,0) 48%),
    #efebe6;
}
.project-detail--seeded .project-main-image.is-studio.studio-tone-soft-greige img{
  filter:drop-shadow(0 18px 28px rgba(58,56,53,.09));
}
@media(max-width:768px){
  .project-detail--seeded .project-main-image.is-studio img{
    filter:drop-shadow(0 12px 20px rgba(75,63,48,.09));
  }
}

.project-detail--seeded:has(.project-main-image.studio-tone-soft-greige) .project-thumbnail--studio{
  background:#efebe6;
}


/* Project detail lightbox. Keep the main image visually identical to the
   approved placeholder detail: no overlaid zoom badge or hover treatment. */
.project-main-image--zoomable{
  position:relative;
  outline:none;
}
.project-lightbox-open{overflow:hidden}
.project-lightbox{
  position:fixed;
  inset:0;
  z-index:10000;
  display:grid;
  place-items:center;
  padding:clamp(20px,4vw,56px);
  background:rgba(18,17,15,.92);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
}
.project-lightbox.is-open{
  opacity:1;
  visibility:visible;
}
.project-lightbox-stage{
  width:min(88vw,1500px);
  height:min(86vh,1000px);
  display:flex;
  align-items:center;
  justify-content:center;
}
.project-lightbox-stage img{
  display:block;
  max-width:100%;
  max-height:100%;
  width:auto;
  height:auto;
  object-fit:contain;
  box-shadow:0 24px 80px rgba(0,0,0,.26);
}
.project-lightbox-close,
.project-lightbox-nav{
  position:absolute;
  display:grid;
  place-items:center;
  border:0;
  color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .2s ease,opacity .2s ease;
}
.project-lightbox-close:hover,
.project-lightbox-nav:hover{background:rgba(255,255,255,.16)}
.project-lightbox-close{
  top:24px;
  right:28px;
  width:44px;
  height:44px;
  border-radius:50%;
  font-size:30px;
  font-weight:200;
  line-height:1;
}
.project-lightbox-nav{
  top:50%;
  width:48px;
  height:72px;
  transform:translateY(-50%);
  font-family:var(--serif-en);
  font-size:42px;
  font-weight:200;
}
.project-lightbox-prev{left:24px}
.project-lightbox-next{right:24px}
.project-lightbox-nav[hidden]{display:none!important}
@media(max-width:768px){
  .project-lightbox{padding:58px 10px 24px}
  .project-lightbox-stage{width:100%;height:calc(100dvh - 92px)}
  .project-lightbox-close{top:14px;right:14px;width:40px;height:40px}
  .project-lightbox-nav{width:42px;height:58px;font-size:36px;background:rgba(0,0,0,.18)}
  .project-lightbox-prev{left:8px}
  .project-lightbox-next{right:8px}
}
@media(prefers-reduced-motion:reduce){
  .project-lightbox{transition:none}
}

/* Preserve the full product composition for portrait/mixed-aspect seeded case media. */

.project-detail--seeded .project-main-image.project-main-image--contain{
  padding:0;
  background:transparent;
}
.project-detail--seeded .project-main-image.project-main-image--contain img{
  object-fit:contain;
}

/* Smaller attribution note for seeded case details. */

.project-detail--seeded .project-case-notice{
  margin-top:18px;
}
.project-detail--seeded .project-case-notice h2{
  font-size:13px;
  margin-bottom:6px;
  letter-spacing:.04em;
}
.project-detail--seeded .project-case-notice p{
  font-size:12px;
  line-height:1.75;
}

/* Keep contain-mode thumbnails fully visible without a framed background. */

.project-detail--seeded .project-thumbnail.project-thumbnail--contain{
  background:transparent;
}
.project-detail--seeded .project-thumbnail.project-thumbnail--contain img{
  object-fit:contain;
}