.m3d{--stage-h:calc(100vh - 190px);min-height:60vh;padding:0 0 60px}.m3d-bar{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:20px;max-width:1280px;margin:0 auto;padding:28px 24px 18px;display:flex}.m3d-back{color:var(--text-secondary);transition:color var(--transition);align-items:center;gap:7px;font-size:.85rem;font-weight:500;text-decoration:none;display:inline-flex}.m3d-back:hover{color:var(--accent)}.m3d-back svg{flex-shrink:0}[dir=ltr] .m3d-back svg{transform:scaleX(-1)}.m3d-titles{text-align:start;flex-direction:column;gap:3px;display:flex}.m3d-titles h1{color:var(--text-primary);margin:0;font-size:1.32rem;font-weight:700;line-height:1.5}.m3d-place{color:var(--text-tertiary);font-size:.82rem}.m3d-stage{max-width:1280px;height:var(--stage-h);border:1px solid var(--bg-glass-border);background:radial-gradient(120% 90% at 50% 8%,#2abbdf17,transparent 62%),var(--bg-secondary);border-radius:18px;min-height:420px;margin:0 auto;position:relative;overflow:hidden}.m3d-stage.is-full{border:none;border-radius:0;max-width:none;height:100vh}model-viewer{--poster-color:transparent;background:0 0;width:100%;height:100%;display:block}.m3d-gate{text-align:center;z-index:3;place-items:center;padding:28px 20px;display:grid;position:absolute;inset:0}.m3d-gate[hidden]{display:none}.m3d-gate-poster{object-fit:cover;opacity:.16;filter:blur(3px);width:100%;height:100%;position:absolute;inset:0}.m3d-gate-inner{flex-direction:column;align-items:center;gap:12px;max-width:430px;display:flex;position:relative}.m3d-gate-icon{width:42px;height:42px;stroke:var(--accent);fill:none}.m3d-gate-inner h2{color:var(--text-primary);margin:2px 0 0;font-size:1.16rem;font-weight:700}.m3d-gate-lede{color:var(--text-secondary);margin:0;font-size:.88rem;line-height:1.85}.m3d-notice{background:var(--bg-primary);border:1px solid var(--bg-glass-border);border-inline-start:3px solid var(--accent);text-align:start;border-radius:12px;margin-top:4px;padding:13px 15px}.m3d-notice p{color:var(--text-secondary);margin:0;font-size:.8rem;line-height:1.9}.m3d-notice p+p{margin-top:6px}.m3d-notice b{color:var(--text-primary);font-weight:700}.m3d-size{color:var(--accent);direction:ltr;unicode-bidi:isolate;font-weight:700;display:inline-block}.m3d-start{background:var(--accent);color:#fff;cursor:pointer;transition:transform var(--transition),filter var(--transition);border:none;border-radius:12px;margin-top:6px;padding:12px 26px;font-family:inherit;font-size:.93rem;font-weight:600}.m3d-start:hover{filter:brightness(1.08);transform:translateY(-1px)}.m3d-start:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.m3d-loading{inset-inline:0;z-index:2;color:var(--text-secondary);pointer-events:none;justify-content:center;align-items:center;gap:10px;font-size:.84rem;display:flex;position:absolute;bottom:22px}.m3d-loading[hidden]{display:none}.m3d-loading-pct{color:var(--accent);font-variant-numeric:tabular-nums;font-weight:700}.m3d-progress{inset-inline:12%;background:var(--bg-glass-border);border-radius:2px;height:2px;position:absolute;bottom:54px;overflow:hidden}.m3d-progress span{background:var(--accent);width:0;height:100%;transition:width .25s;display:block}.m3d-error{text-align:center;z-index:3;place-content:center;justify-items:center;gap:8px;padding:24px;display:grid;position:absolute;inset:0}.m3d-error[hidden]{display:none}.m3d-error p{color:var(--text-primary);margin:0;font-weight:600}.m3d-error-hint{max-width:40ch;font-size:.84rem;line-height:1.9;color:var(--text-secondary)!important;font-weight:400!important}.m3d-error-back{color:var(--accent);margin-top:8px;font-size:.85rem;text-decoration:none}.m3d-error-back:hover{text-decoration:underline}.m3d-controls{inset-inline-end:16px;z-index:2;flex-direction:column;gap:7px;display:flex;position:absolute;top:16px}.m3d-controls[hidden]{display:none}.m3d-ctl{border:1px solid var(--bg-glass-border);background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;white-space:nowrap;transition:border-color var(--transition),color var(--transition);border-radius:10px;padding:8px 13px;font-family:inherit;font-size:.76rem;font-weight:500}.m3d-ctl:hover{border-color:var(--accent);color:var(--accent)}.m3d-ctl:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.m3d-ctl.is-off{color:var(--text-tertiary)}.m3d-ar{inset-inline-start:16px;background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:11px;padding:10px 16px;font-family:inherit;font-size:.8rem;font-weight:600;position:absolute;bottom:16px}.m3d-hint{max-width:1280px;color:var(--text-tertiary);text-align:center;margin:12px auto 0;padding:0 24px;font-size:.76rem}.m3d-hint[hidden]{display:none}@media (width<=768px){.m3d{--stage-h:calc(100vh - 250px)}.m3d-bar{padding:20px 16px 14px}.m3d-titles h1{font-size:1.1rem}.m3d-stage{border-radius:14px;min-height:360px;margin:0 12px}.m3d-controls{inset-inline-end:10px;flex-flow:wrap;justify-content:flex-end;max-width:calc(100% - 20px);top:10px}.m3d-ctl{padding:7px 10px;font-size:.72rem}.m3d-gate-inner h2{font-size:1.04rem}.m3d-notice p{font-size:.76rem}}@media (prefers-reduced-motion:reduce){.m3d-start,.m3d-ctl,.m3d-back,.m3d-progress span{transition:none}}