/* Preserve the established header; increase only the brand's visual size. */
dialog.indoor-dialog{width:min(1100px,95vw);max-height:92vh;overflow:auto;padding:35px}
#indoor-visual h3{margin:25px 0 20px;font-size:24px;line-height:1.7}
.indoor-visual-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:28px;align-items:start}
.indoor-visual-grid figure{margin:0}
.indoor-visual-grid img{display:block;width:100%;height:auto;border-radius:5px}
.indoor-visual-grid figcaption{font-size:11px;line-height:1.8;margin-top:10px;color:var(--muted)}
.indoor-visual-grid .text-link{font-size:12px}
.sound-path-list{padding:0;margin:0;list-style:none}
.sound-path-list li{display:flex;align-items:flex-start;gap:12px;margin-bottom:20px}
.path-number{background:var(--ink);color:var(--paper);width:31px;height:31px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;font:600 15px 'DM Sans',sans-serif;margin-top:5px}
.sound-path-list h4{font-size:17px;line-height:1.7;margin:0 0 8px}
.sound-path-list p{font-size:14px;line-height:1.95;margin:0}
dialog .building-takeaway{background:#efe9dc;border-inline-start:3px solid var(--sand);padding:15px 20px;font-size:14px;margin:25px 0}
@media(max-width:700px){dialog.indoor-dialog{padding:28px 20px}.indoor-visual-grid{grid-template-columns:1fr}.indoor-visual-grid figure{max-width:420px;margin:0 auto}#indoor-visual h3{font-size:21px}.sound-path-list p{font-size:14px}}
.detail-page{max-width:1100px;margin:auto;min-height:60vh}
.detail-page h1{font-size:clamp(29px,3.6vw,46px);line-height:1.6;letter-spacing:-.5px}
.detail-page>p{color:var(--muted);max-width:750px}
.stage-page{max-width:900px}
.back-home{display:inline-block;font-size:13px;margin-bottom:25px;padding-bottom:5px;border-bottom:1px solid var(--sand)}
.stage-title-link{cursor:pointer;text-underline-offset:7px;text-decoration:underline;text-decoration-color:#c9b89470;text-decoration-thickness:1px}
.stage-title-link:hover{color:#94764b}
.services .service-read{margin-inline-end:18px}
.stage-page .stage-material{margin:30px 0}
.stage-page .stage-material li p,.stage-page .stage-material details>p{font-size:16px;line-height:2}
.stage-page .stage-material h4{font-size:19px}
.stage-page .stage-material summary{font-size:17px}
.stage-page .stage-material .stage-reference summary{font-size:13px}
header .brand{width:102px}
header .brand svg{width:66px;height:54px}
header .brand strong{font-size:28px}
header .brand small{font-size:10px;letter-spacing:4px}
.stage-material{margin-top:22px;text-align:start}
.stage-material details{border-top:1px solid #ded6c6;padding:13px 0}
.stage-material summary,.sound-guide summary{cursor:pointer;font-weight:600;font-size:14px;line-height:1.8}
.stage-material summary:hover,.sound-guide summary:hover{color:#927549}
.stage-material summary:focus-visible,.sound-guide summary:focus-visible{outline:2px solid var(--sand);outline-offset:5px}
.stage-material ol{padding-inline-start:22px;margin:16px 0 0}
.stage-material li{padding-inline-start:5px;margin-bottom:18px}
.stage-material li::marker{color:#9b7e4c;font-size:13px}
.stage-material h4{font-size:15px;margin:0 0 5px;font-weight:600;line-height:1.7}
.stage-material li p,.stage-material details>p{font-size:13px;line-height:1.95;margin:7px 0 0}
.stage-reference summary{font-size:12px;font-weight:400;color:var(--muted)}
.stage-reference a{display:block;margin-top:10px;font-size:11px;line-height:1.8;text-decoration:underline;text-underline-offset:4px}
.sound-guide{background:#f1eee6;border-top:1px solid #e1d9cb}
.knowledge-grid,.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.knowledge-card{background:var(--paper);padding:28px 32px;border-radius:5px}
.concept-mark{display:inline-flex;color:#9c8050;font-size:27px;direction:ltr;font-family:'DM Sans',sans-serif;border-bottom:1px solid #d9c7a3;padding-bottom:9px;margin-bottom:8px}
.sound-guide h3{font-size:25px;margin:10px 0}
.sound-guide h4{font-size:17px;margin:23px 0 7px}
.sound-guide p{font-size:14px;color:var(--muted);line-height:2;margin:6px 0 15px}
.acoustic-comparison{margin-top:38px}
.comparison-grid{background:var(--paper);padding:28px 32px;margin-top:22px;border-radius:5px;gap:35px}
.comparison-grid article+article{border-inline-start:1px solid #ded6c6;padding-inline-start:35px}
.comparison-grid h4{font-size:21px;margin:7px 0 14px}
.comparison-grid strong{display:block;font-size:15px;font-weight:500;line-height:1.9;margin-bottom:15px}
.concept-diagram{width:150px;height:65px;fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round}
.concept-diagram .diagram-wall{stroke:var(--sand);fill:#d7c8a855}
.sound-guide .key-difference{border-inline-start:3px solid var(--sand);padding:12px 20px;margin:20px 0;color:var(--ink);font-size:14px}
.knowledge-bottom{display:flex;align-items:start;justify-content:space-between;gap:25px;margin-top:30px}
.knowledge-bottom a{display:block;font-size:12px;margin-top:12px;text-decoration:underline;text-underline-offset:4px;line-height:1.8}
.knowledge-bottom .primary{font-size:13px;white-space:nowrap}
@media(max-width:800px){header .brand{width:94px}header .brand svg{width:61px;height:50px}header .brand strong{font-size:26px}header .brand small{font-size:9px}.stage-jump{font-size:11px}.services>article{padding-inline:5px}.stage-material li p,.stage-material details>p{font-size:14px}.knowledge-grid,.comparison-grid{grid-template-columns:1fr;gap:20px}.knowledge-card,.comparison-grid{padding:25px}.comparison-grid article+article{border-inline-start:0;border-top:1px solid #ded6c6;padding-inline-start:0;padding-top:22px}.knowledge-bottom{flex-direction:column}.sound-guide h3{font-size:23px}}