/* Progressive depth enhancement; original card sizes and grid remain intact. */
.product-depth{--depth-x:0deg;--depth-y:0deg;--light-x:50%;--light-y:50%;cursor:zoom-in;transform:perspective(650px) rotateX(var(--depth-x)) rotateY(var(--depth-y));transition:transform .18s ease,box-shadow .18s ease;border-radius:12px;isolation:isolate}
.product-depth::after{content:'↗';position:absolute;right:7px;bottom:7px;display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#fffdf5e8;color:#292a30;box-shadow:0 2px 8px #1010201a;font:16px/1 Arial,sans-serif;pointer-events:none;z-index:3}
.product-depth::before{content:'';position:absolute;inset:0;border-radius:inherit;background:radial-gradient(circle at var(--light-x) var(--light-y),#ffffff55,transparent 65%);opacity:0;transition:opacity .2s;pointer-events:none;z-index:2}
.product-depth:hover{box-shadow:0 10px 20px -12px #151a3559}.product-depth:hover::before{opacity:1}
.product-depth:focus-visible{outline:3px solid #7974e9;outline-offset:-3px}
.depth-viewer{position:fixed;inset:0;margin:auto;box-sizing:border-box;width:min(680px,calc(100vw - 32px));max-width:none;max-height:calc(100dvh - 32px);padding:0;border:1px solid #fff7;border-radius:24px;background:#f7f8fa;color:#23252c;box-shadow:0 28px 100px #0006;font:14px/1.5 Inter,Arial,"Microsoft YaHei",sans-serif;overflow:auto;overscroll-behavior:contain}
.depth-viewer *{box-sizing:border-box}
.depth-viewer::backdrop{background:#10131bba;backdrop-filter:blur(12px)}
.depth-viewer button{appearance:none;border:1px solid #dbdee6;background:#fff;color:#313540;border-radius:12px;height:40px;min-width:40px;padding:0 12px;font-family:inherit;font-size:14px;font-weight:500;line-height:1.2;cursor:pointer;transition:background .15s}
.depth-viewer button:hover{background:#ecebf5}.depth-viewer button:focus-visible,.depth-viewer input:focus-visible{outline:3px solid #7974e9;outline-offset:3px}
.depth-header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid #e7e8ed;gap:12px}
.depth-header>span{font-size:11px;font-weight:700;letter-spacing:2px;color:#757985}.depth-header small{display:block;font-size:11px;letter-spacing:.1em;font-weight:400;margin-top:3px;color:#9396a0}
.depth-viewer .depth-close{font-size:26px;font-weight:300;border-radius:50%;padding:0}
.depth-stage{position:relative;display:grid;place-items:center;height:clamp(240px,44dvh,400px);overflow:hidden;perspective:1100px;touch-action:none;user-select:none;cursor:grab;background:radial-gradient(ellipse at 50% 40%,#fff 5%,#eef0f5 70%)}
.depth-stage:focus-visible{outline:2px solid #7974e9;outline-offset:-4px}.depth-stage.is-dragging{cursor:grabbing}
.depth-orbit{position:absolute;width:75%;height:28%;bottom:10%;border:1px solid #c9ccda80;border-radius:50%;background:radial-gradient(ellipse,#333c5a20,transparent 65%);transform:rotate(-7deg)}
.depth-object{width:clamp(185px,32dvh,295px);max-width:70%;aspect-ratio:1;transform-style:preserve-3d;transform:rotateX(var(--depth-x,-7deg)) rotateY(var(--depth-y,-13deg)) scale(var(--depth-zoom,1));transition:transform .16s ease;will-change:transform}
.is-dragging .depth-object{transition:none}
.depth-object::before{content:'';position:absolute;inset:1px;border-radius:18px;background:#c8cad4;transform:translateZ(-8px);box-shadow:12px 24px 35px #28314a30}
.depth-surface{position:absolute;inset:0;border:1px solid #fff;border-radius:18px;background:#fff;box-shadow:inset 0 0 0 1px #1c23400a;overflow:hidden;transform:translateZ(2px)}
.depth-surface img{display:block;width:100%;height:100%;object-fit:contain;padding:15px;pointer-events:none}
.depth-sheen{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at var(--light-x,35%) var(--light-y,40%),#ffffff60,transparent 60%);mix-blend-mode:screen}
.depth-counter{position:absolute;top:18px;left:24px;color:#858999;font-size:11px;letter-spacing:2px;font-variant-numeric:tabular-nums}
.depth-hint{position:absolute;bottom:16px;left:12px;right:12px;text-align:center;color:#7a7f8c;font-size:12px;pointer-events:none}
.depth-info{padding:22px 28px 16px;background:#fff}.depth-eyebrow{margin:0 0 7px;font-size:10px;letter-spacing:2px;color:#9295a0}
.depth-info h2{font-size:20px;line-height:1.45;letter-spacing:-.3px;margin:0;font-weight:600;overflow-wrap:anywhere}.depth-price{margin:8px 0 0;color:#7163ba;font-size:18px;font-weight:600;min-height:0}.depth-price:empty{display:none}
.depth-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid #e7e8ed;padding:16px 24px;background:#fff}
.depth-step{display:flex;gap:6px}.depth-zoom{display:flex;gap:10px;align-items:center;color:#737887;font-size:12px;min-width:0}.depth-zoom input{width:110px;min-width:40px;accent-color:#7465c4;cursor:pointer}.depth-zoom output{width:36px;font-variant-numeric:tabular-nums}
@media(max-width:480px){.depth-viewer{width:calc(100vw - 20px);border-radius:20px;max-height:calc(100dvh - 20px)}.depth-header{padding:14px 18px}.depth-info{padding:18px 20px 14px}.depth-info h2{font-size:17px}.depth-controls{padding:12px 16px;gap:10px;flex-wrap:wrap}.depth-zoom{order:3;width:100%;justify-content:center;padding:6px 0}.depth-zoom input{width:60%}.depth-stage{height:clamp(220px,39dvh,340px)}}
@media(prefers-reduced-motion:reduce){.product-depth,.depth-object{transition:none}.product-depth{transform:none}.depth-sheen{display:none}}
/* Real mesh viewer replaces the former tilted-photo presentation. */
.product-depth{transform:none;transition:box-shadow .18s ease}.product-depth::before{display:none}.product-depth.has-mesh::after{content:'3D';width:32px;border-radius:7px;font-size:10px;letter-spacing:1px;font-weight:700;background:#24252a;color:#fff}
.mesh-stage{height:clamp(270px,44dvh,440px);background:radial-gradient(ellipse at 50% 35%,#faf9f5,#e7e5e1);display:block;cursor:grab;touch-action:none}.mesh-stage canvas{display:block;width:100%;height:100%;outline-offset:-3px}.mesh-stage canvas:focus-visible{outline:2px solid #7465c4}
.model-status{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:30px;color:#797870;font-size:13px;pointer-events:none}.model-status:empty{display:none}
.mesh-views{display:flex;gap:6px;justify-content:center;padding:10px;background:#efeeeb;border-top:1px solid #e0dfdb}.mesh-views button{height:32px;font-size:12px;background:transparent;border-color:#d5d3cc;min-width:50px}.mesh-views [aria-pressed="true"]{background:#25262b;color:white}
.mesh-note{font-size:11px;line-height:1.65;color:#92908a;margin:10px 0 0}.plain-product-image{width:85%;height:85%;object-fit:contain}.photo-stage{background:white}
.model-download{font-size:12px;color:#70613d;text-decoration:underline;white-space:nowrap}.depth-viewer .depth-info{padding-top:16px;padding-bottom:14px}
.mesh-import{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 24px;font-size:11px;color:#807b71;background:#f4f3f0;border-top:1px solid #e3e1db}.mesh-import input{max-width:100%;font-size:11px}
@media(max-width:480px){.mesh-stage{height:clamp(260px,39dvh,350px)}.mesh-views{gap:4px}.mesh-views button{font-size:11px;padding:0 10px}.depth-controls .model-download{font-size:11px}.depth-viewer .depth-info h2{font-size:16px}}