.m3015{color:#242424;background:#fff;overflow-wrap:anywhere}
.m3015-inner{max-width:1320px;margin:auto;padding:48px 24px;border-bottom:1px solid #ececec}
.m3015 h2{font-size:clamp(25px,3vw,36px);line-height:1.2;margin:0 0 18px}
.m3015 h3{font-size:20px;line-height:1.35;margin:16px 0 8px}
.m3015 p{line-height:1.65;margin:0 0 18px;color:#484848}
.m3015-intro{max-width:840px}
.m3015 img{display:block;width:100%;height:auto;object-fit:contain;border-radius:10px}
.m3015-split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:center}
.m3015-split--text{grid-template-columns:minmax(0,1fr)}
.m3015-points{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.m3015-points h3{margin:0 0 8px}
.m3015-note{padding:16px;border-left:3px solid #243c56;background:#f5f5f5;font-size:14px}
.m3015-materials{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.m3015-gallery{display:block;min-width:0;margin-top:24px}
.m3015-track{display:grid;grid-template-columns:repeat(var(--m3015-columns,3),minmax(0,1fr));gap:20px}
.m3015-card{margin:0;min-width:0}
.m3015-static{display:grid;gap:20px;margin-top:24px}
.m3015-static--installation{grid-template-columns:repeat(4,minmax(0,1fr))}
.m3015-static--materials{grid-template-columns:repeat(2,minmax(0,1fr))}
.m3015-card figcaption{padding:12px 0;line-height:1.5}
.m3015-progress{display:none}
.m3015-video{margin:24px 0}
.m3015-video iframe{display:block;border:0;width:100%;aspect-ratio:16/9;height:auto}
.m3015-video video{display:block;width:100%;height:auto}
.m3015-faq details{border-bottom:1px solid #ddd;padding:18px 0}
.m3015-faq summary{font-weight:600;cursor:pointer;line-height:1.5;padding:8px 0}
.m3015-faq details p{margin:12px 0 0}
@media(max-width:749px){
.m3015-inner{padding:32px 16px}
.m3015-static{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}
.m3015-split,.m3015-materials{grid-template-columns:minmax(0,1fr);gap:24px}
.m3015 h3{font-size:18px}
.m3015-track{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none}
.m3015-track::-webkit-scrollbar{display:none}
.m3015-card{flex:0 0 100%;scroll-snap-align:start;scroll-snap-stop:always}
.m3015-progress:not([hidden]){display:flex;gap:6px;margin-top:8px}
.m3015-progress button{flex:1;min-width:0;height:44px;border:0;background:transparent;padding:0;cursor:pointer}
.m3015-progress button:after{content:"";display:block;width:100%;height:4px;border-radius:4px;background:#d9dde3}
.m3015-progress button[aria-current="true"]:after{background:#243c56}
}
.m3015 button:focus-visible,.m3015 summary:focus-visible,.m3015-track:focus-visible{outline:2px solid #243c56;outline-offset:3px}
@media(prefers-reduced-motion:reduce){.m3015-track{scroll-behavior:auto!important}}