/* GMT Catalog Flipbook — 2026-10-19 */
.gmt-cat-section{max-width:1240px;margin:0 auto;padding:56px 18px 30px}
.gmt-cat-head{text-align:center;margin-bottom:28px}
.gmt-cat-head h2{font-size:30px;line-height:1.2;margin:0 0 8px;color:#1f2937;font-weight:800;letter-spacing:-.4px}
.gmt-cat-head p{margin:0;color:#6b7280;font-size:15px}
.gmt-cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
@media(max-width:1100px){.gmt-cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.gmt-cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}}
@media(max-width:420px){.gmt-cat-grid{grid-template-columns:1fr}}
.gmt-cat-card{background:#fff;border:1px solid #e8e3dc;border-radius:12px;overflow:hidden;box-shadow:0 4px 18px rgba(15,23,42,.05);display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.gmt-cat-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(15,23,42,.12)}
.gmt-cat-cover{position:relative;background:#f4f1ec;aspect-ratio:1/1.414;overflow:hidden}
.gmt-cat-cover img{width:100%;height:100%;object-fit:cover;display:block}
.gmt-cat-badge{position:absolute;right:10px;bottom:10px;background:rgba(30,41,59,.82);color:#fff;font-size:11px;font-weight:700;padding:4px 8px;border-radius:5px;letter-spacing:.3px}
.gmt-cat-info{padding:13px 14px 15px;display:flex;flex-direction:column;gap:4px;flex:1}
.gmt-cat-cat{font-size:11px;font-weight:700;color:#F59E0B;text-transform:uppercase;letter-spacing:.6px}
.gmt-cat-title{font-size:14px;font-weight:700;color:#1f2937;line-height:1.35;margin:0;min-height:38px}
.gmt-cat-meta{font-size:12px;color:#9ca3af;margin-top:2px}
.gmt-cat-open{margin-top:auto;padding-top:10px}
.gmt-cat-open button{width:100%;border:0;border-radius:8px;background:#1E293B;color:#fff;font-size:13px;font-weight:700;padding:9px 10px;cursor:pointer;transition:background .15s}
.gmt-cat-open button:hover{background:#F59E0B;color:#1E293B}
.gmt-flip-modal{position:fixed;inset:0;z-index:999999;background:rgba(12,18,28,.82);display:none;align-items:center;justify-content:center;padding:18px;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.gmt-flip-modal.on{display:flex}
.gmt-flip-shell{width:min(1180px,98vw);height:94vh;display:flex;flex-direction:column;background:#141b26;border-radius:14px;overflow:hidden;box-shadow:0 24px 80px rgba(0,0,0,.5)}
.gmt-flip-top{display:flex;align-items:center;gap:14px;padding:12px 16px;background:#1E293B;color:#fff;flex:0 0 auto}
.gmt-flip-top b{font-size:15px;font-weight:700;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gmt-flip-top .gmt-flip-count{font-size:13px;color:#cbd5e1;font-variant-numeric:tabular-nums}
.gmt-flip-close{border:0;background:rgba(255,255,255,.12);color:#fff;width:34px;height:34px;border-radius:8px;font-size:18px;cursor:pointer;line-height:1}
.gmt-flip-close:hover{background:#F59E0B;color:#1E293B}
.gmt-flip-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 8px 16px;position:relative}
.gmt-flip-nav{border:0;background:rgba(255,255,255,.1);color:#fff;width:42px;height:64px;border-radius:10px;font-size:30px;cursor:pointer;flex:0 0 auto;line-height:1;z-index:5}
.gmt-flip-nav:hover{background:#F59E0B;color:#1E293B}
.gmt-flip-nav:disabled{opacity:.25;cursor:default}
.gmt-flip-book{width:min(920px,82vw);height:100%;max-height:100%;margin:0 auto}
.gmt-page{width:100%;height:100%;background:#fff;overflow:hidden}
.gmt-page img{width:100%;height:100%;object-fit:fill;display:block;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none}
.gmt-flip-hint{display:none}
@media(max-width:760px){
 .gmt-flip-modal{padding:0}
 .gmt-flip-shell{width:100vw;height:100vh;border-radius:0}
 .gmt-flip-stage{padding:8px 2px;gap:2px}
 .gmt-flip-nav{width:30px;height:54px;font-size:24px;background:rgba(255,255,255,.07)}
 .gmt-flip-book{width:96vw;height:100%}
 .gmt-flip-hint{display:none}
 .gmt-cat-head h2{font-size:24px}
}

.gmt-cat-loading{grid-column:1/-1;text-align:center;color:#9ca3af;font-size:14px;padding:30px 0}

.gmt-cat-cta{display:flex;align-items:center;gap:18px;justify-content:space-between;background:#1E293B;color:#fff;border-radius:12px;padding:22px 26px;margin-top:30px;flex-wrap:wrap}
.gmt-cat-cta-txt b{display:block;font-size:18px;margin-bottom:4px}
.gmt-cat-cta-txt span{color:#cbd5e1;font-size:13px;line-height:1.5}
.gmt-cat-cta-btn{background:#F59E0B;color:#1E293B;font-weight:800;padding:12px 24px;border-radius:8px;text-decoration:none;white-space:nowrap;transition:background .15s}
.gmt-cat-cta-btn:hover{background:#fff;color:#1E293B}
@media(max-width:600px){.gmt-cat-cta{padding:18px;gap:12px}.gmt-cat-cta-btn{width:100%;text-align:center}}