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/* October 3: expanded product story and installation archive */
.expanded-detail .chapter-intro{padding:55px 48px 32px;text-align:center}.chapter-intro>p:last-child{max-width:740px;margin:0 auto}.long-detail-art{display:block;width:100%;height:auto;max-height:none;object-fit:contain}.detail-reading{margin:0 32px 32px;border:1px solid var(--line);border-radius:8px}.detail-reading summary{padding:20px 24px;color:var(--blue)}.detail-reading-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:22px 24px}.detail-reading-grid h3{font-size:20px}.detail-reading-grid p{padding:0;font-size:16px;margin-bottom:0}.store-chapter .intro{max-width:840px}.store-scene{width:100%;height:auto;border-radius:16px;margin:30px 0}.store-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin:38px 0}.store-steps b{color:var(--blue);font-size:12px}.store-steps h3{margin-top:14px}.store-steps p{font-size:16px}.store-link{display:inline-block;padding:14px 22px;background:var(--blue);color:white;border-radius:6px;font-weight:700}.gallery-controls{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin:25px 0 18px}.gallery-controls button{min-height:44px;min-width:44px;padding:8px 14px;font-size:14px}.gallery-controls span{font-size:14px;margin-right:auto;color:var(--blue);font-weight:700}.install-track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 40px)/3);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:thin;padding-bottom:16px;position:relative}.install-track figure{scroll-snap-align:start;min-width:0}.install-track img{width:100%;height:350px;object-fit:contain;background:var(--pale);border-radius:10px}.install-track figcaption{padding:3px 5px;font-size:14px}.install-track figcaption span{color:var(--blue);font-weight:800;margin-right:6px}.installation-gallery>small{margin-top:12px}.product-detail+.product-detail{margin-top:55px}
@media(max-width:700px){.expanded-detail .chapter-intro{padding:34px 20px 25px}.chapter-intro h2{font-size:27px}.detail-reading{margin:0 14px 20px}.detail-reading summary{padding:16px;font-size:15px}.detail-reading-grid{grid-template-columns:1fr;padding:18px;gap:26px}.store-steps{grid-template-columns:1fr;gap:20px}.store-steps article+article{border-top:1px solid var(--line);padding-top:20px}.store-scene{border-radius:8px}.install-track{grid-auto-columns:100%}.install-track img{height:360px}.gallery-controls{gap:6px}.gallery-controls button{font-size:12px;padding:9px 10px}.gallery-controls span{font-size:12px}.product-detail+.product-detail{margin-top:32px}}
.long-detail-art{max-width:724px;margin:0 auto}.expanded-detail{max-width:1000px}
/* Detail artwork: sky-blue canvas, narrow frame matching native image width. */
.detail-wrap{background:#edf6ff}
.product-detail.expanded-detail{max-width:736px;background:transparent;overflow:visible}
.expanded-detail .chapter-intro{padding:36px 12px 28px}
.expanded-detail .long-detail-art{width:100%;max-width:736px;height:auto;border:6px solid #fff;background:#fff}
.expanded-detail .detail-reading{margin:18px 0 0;background:transparent;border-color:#cbddec}
@media(max-width:700px){.detail-wrap{padding:24px 12px 40px}.expanded-detail .chapter-intro{padding:16px 8px 24px}.expanded-detail .long-detail-art{border-width:3px}.expanded-detail .detail-reading{margin:14px 0 0}}

/* White editorial headers above sky-blue product artwork. */
.expanded-detail .chapter-intro{background:#fff;padding:38px 30px 32px;margin-bottom:18px}
.store-chapter{background:#edf6ff}
.store-chapter .chapter-intro{background:#fff;padding:38px 30px 32px}
.store-chapter .chapter-intro .intro{margin:0;max-width:840px}
@media(max-width:700px){.expanded-detail .chapter-intro,.store-chapter .chapter-intro{padding:28px 20px 24px}.expanded-detail .chapter-intro{margin-bottom:14px}}

.store-detail-art{margin:24px auto 0}.store-source-copy{max-width:840px;margin:42px auto 0}.store-source-copy h3{font-size:25px}.store-source-copy p{line-height:1.9}@media(max-width:700px){.store-source-copy{margin-top:28px}.store-source-copy h3{font-size:22px}}

.store-context-label{display:inline-block;background:var(--pale);padding:8px 14px;border-radius:5px;font-size:14px}.store-prepare{background:var(--pale);border-left:3px solid var(--blue);padding:24px;margin-top:30px;max-width:880px}.store-prepare p{margin:0}.store-editorial .operating-note{padding-bottom:22px}