:root{color:#17202a;background:#eef2f5;font-size:17px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}.app-shell{min-height:100vh;padding:24px}.app-header{display:grid;gap:18px;max-width:1260px;margin:0 auto 18px}.brand-bar{display:flex;justify-content:space-between;gap:20px;align-items:center}.logo-lockup{display:flex;gap:14px;align-items:center;min-width:0}.logo-lockup span{color:#526170;font-size:.92rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.brand-logo-frame{display:grid;place-items:center;width:188px;height:74px;border:1px solid #d9e1e8;border-radius:8px;background:#fff;overflow:hidden;box-shadow:0 14px 34px #1c2a3612}.brand-mark{display:block;width:100%;height:100%;object-fit:cover;object-position:center;transform:scale(1.08)}.hero-copy{display:grid;gap:10px}.toolbar{display:grid;grid-template-columns:repeat(2,170px);gap:12px}.toolbar-group{display:grid;gap:7px}.toolbar span{color:#526170;font-size:.86rem;font-weight:900}.mini-segmented{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.mini-segmented button{min-height:40px;border:1px solid #cbd6df;border-radius:6px;background:#fff;color:#344250;cursor:pointer;font-size:.88rem;font-weight:900}.mini-segmented button.active{border-color:#17202a;background:#17202a;color:#fff}.app-header h1,.panel h2,.rule-row h3{margin:0;letter-spacing:0}.app-header h1{max-width:680px;font-size:clamp(2.45rem,4.1vw,4.8rem);line-height:1}.hero-row{display:grid;grid-template-columns:minmax(0,.95fr) minmax(320px,.8fr);gap:34px;align-items:end}.hero-row>p{margin:0;color:#526170;line-height:1.6;font-size:1.02rem}.eyebrow{margin:0 0 8px;color:#9b3d2e;font-size:.88rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.workspace-grid{display:grid;grid-template-columns:minmax(320px,.88fr) minmax(440px,1.12fr);gap:18px;max-width:1260px;margin:0 auto}.left-stack,.right-stack{display:grid;gap:18px;align-content:start}.panel{background:#fff;border:1px solid #d9e1e8;border-radius:8px;box-shadow:0 18px 45px #1c2a3614;padding:24px}.panel-heading{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:18px}.reset-button{min-height:40px;border:1px solid #cbd6df;border-radius:6px;background:#f8fafb;color:#344250;cursor:pointer;font-size:.9rem;font-weight:900;padding:0 12px}.plan-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.reset-button:hover{border-color:#9b3d2e;color:#9b3d2e}.reset-button.active{border-color:#2e6f87;background:#eef7f9;color:#2e6f87}.reset-button.primary-action{border-color:#9b3d2e;background:#9b3d2e;color:#fff}.reset-button.primary-action:hover{border-color:#7e3025;background:#7e3025;color:#fff}.reset-button:disabled{cursor:not-allowed;opacity:.45}.reset-button:disabled:hover{border-color:#cbd6df;color:#344250}.panel h2{font-size:1.45rem}.dimension-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}label{display:grid;gap:7px;color:#526170;font-size:1rem;font-weight:700}input{width:100%;border:1px solid #cbd6df;border-radius:6px;background:#f8fafb;color:#17202a;padding:13px 12px;font-size:1.08rem;font-weight:800}small{color:#7a8792;font-size:.9rem;font-weight:600}fieldset{margin:20px 0 0;padding:0;border:0}legend{margin-bottom:10px;color:#526170;font-size:1rem;font-weight:800}.segmented{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.segmented.two{grid-template-columns:repeat(2,minmax(0,1fr))}.segmented.sub-size-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.segmented button{min-height:50px;border:1px solid #cbd6df;border-radius:6px;background:#f8fafb;color:#344250;cursor:pointer;font-weight:800}.segmented button.active{border-color:#9b3d2e;background:#9b3d2e;color:#fff}.speaker-type-row{grid-template-columns:repeat(3,minmax(0,1fr))}.model-card-grid{display:grid;gap:10px;margin-top:12px}.model-card{display:grid;grid-template-columns:72px minmax(0,1fr);gap:12px;align-items:center;width:100%;min-height:86px;border:1px solid #cbd6df;border-radius:8px;background:#f8fafb;color:#344250;cursor:pointer;padding:10px;text-align:left}.model-card.active{border-color:#9b3d2e;background:#fff7f4;box-shadow:inset 4px 0 #9b3d2e}.model-card img,.model-card-fallback{width:72px;height:66px;border:1px solid #d9e1e8;border-radius:6px;background:#fff;object-fit:cover}.model-card-fallback{display:grid;place-items:center;color:#526170;font-size:.78rem;font-weight:900}.model-card span{display:grid;gap:4px;min-width:0}.model-card strong{color:#17202a;font-size:.98rem}.model-card small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.subwoofer-toggle-row{display:grid;gap:10px}.switch-row{display:flex;align-items:center;gap:10px;min-height:48px;border:1px solid #cbd6df;border-radius:6px;background:#f8fafb;color:#344250;cursor:pointer;padding:10px 12px;font-size:1rem;font-weight:900}.switch-row input{width:18px;height:18px;accent-color:#9b3d2e}.subwoofer-options{display:grid;gap:14px;margin-top:12px}.subwoofer-options>div{display:grid;gap:9px}.subwoofer-options>div>span{color:#526170;font-size:.95rem;font-weight:900}.custom-power{display:grid;grid-template-columns:minmax(0,1fr) 120px auto;gap:8px;align-items:center;margin-top:8px}.custom-power input{min-height:42px;padding:8px 10px}.score-panel{background:#1f2b34;color:#fff}.score-panel .eyebrow{color:#f3c05d}.score-hero{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:18px}.score-summary{max-width:460px;margin:8px 0 0;color:#c9d2da;font-size:.98rem;line-height:1.45}.score-ring{display:grid;place-items:center;width:146px;aspect-ratio:1;border:10px solid #6fb084;border-radius:50%;background:#fff;color:#17202a}.score-ring.good{border-color:#d9a441}.score-ring.fair,.score-ring.needs-work{border-color:#c65a49}.score-ring strong{font-size:3.05rem;line-height:.9}.score-ring span{color:#65727e;font-size:.92rem;font-weight:800}.score-comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:16px}.score-comparison>div{border:1px solid rgba(255,255,255,.13);border-radius:8px;padding:12px}.score-comparison span{display:block;color:#c9d2da;font-size:.86rem;font-weight:900}.score-comparison strong{display:block;margin-top:4px;color:#f3c05d;font-size:1.35rem}.amp-guidance-card{display:grid;gap:12px;margin-bottom:16px;border:1px solid rgba(255,255,255,.13);border-radius:8px;background:#ffffff0d;padding:14px}.amp-guidance-card h3{margin:0;font-size:1.08rem}.amp-guidance-card p{margin:6px 0 0;color:#fff;font-size:1rem;font-weight:900;line-height:1.4}.amp-guidance-details{display:grid;gap:7px;color:#c9d2da;font-size:.9rem;line-height:1.4}.amp-guidance-details strong{color:#f3c05d}.rules-list{display:grid;gap:10px}.rule-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:start;padding:13px 0;border-top:1px solid rgba(255,255,255,.13)}.rule-row h3{font-size:1.08rem}.rule-row p{margin:5px 0 0;color:#c9d2da;font-size:.98rem;line-height:1.45}.rule-row strong{color:#f3c05d}.advanced-details{margin-top:14px;border-top:1px solid rgba(255,255,255,.13);padding-top:14px}.advanced-details summary{cursor:pointer;color:#f3c05d;font-weight:900}.advanced-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.advanced-grid span{border:1px solid rgba(255,255,255,.13);border-radius:6px;color:#d8e0e6;padding:9px;font-size:.9rem;font-weight:800}.preview-panel svg{display:block;width:100%;max-height:660px;aspect-ratio:1 / 1.08;border:1px solid #d9e1e8;border-radius:8px;background:#f8fafb}.guide-line{stroke:#78909c;stroke-width:.025;stroke-dasharray:.08 .07}.measurement-overlay{pointer-events:none}.measurement-overlay line{stroke:#9b3d2e;stroke-width:.025;stroke-dasharray:.06 .05}.measurement-overlay rect{fill:#fffffff0;stroke:#d9e1e8;stroke-width:.012}.measurement-overlay text{fill:#17202a;font-weight:900}.suggested-overlay{pointer-events:none}.suggested-connector{stroke:#2e6f87;stroke-width:.03;stroke-dasharray:.09 .07;opacity:.72}.suggested-marker circle{fill:#2e6f8714;stroke:#2e6f87;stroke-width:.04;stroke-dasharray:.08 .05}.suggested-marker text,.suggested-match text{fill:#2e6f87;font-weight:900}.suggested-match circle{fill:#6fb08414;stroke:#6fb084;stroke-width:.035}.suggested-gap-label rect{fill:#fffffff2;stroke:#2e6f87;stroke-width:.012}.suggested-gap-label text{fill:#2e6f87;font-weight:900}.speaker-marker rect{fill:#9b3d2e}.product-marker .product-frame{fill:#fff;stroke:#d9e1e8;stroke-width:.012}.product-marker image{pointer-events:none}.product-marker .marker-badge{fill:#9b3d2e;stroke:#fff;stroke-width:.018}.draggable-marker{cursor:grab;touch-action:none}.draggable-marker.active{cursor:grabbing}.draggable-marker.active .hit-area{fill:#9b3d2e1f;stroke:#9b3d2e80;stroke-width:.035}.draggable-marker:hover .hit-area{fill:#2e6f8714}.listener-marker circle{fill:#2e6f87}.sub-marker rect{fill:#d9a441}.draggable-marker .hit-area{fill:transparent}.speaker-marker text,.listener-marker text,.sub-marker text{fill:#fff;font-weight:900}.reflection-marker line{stroke:#2e6f87;stroke-width:.035}.reflection-marker text,.svg-label{fill:#526170;font-weight:800}.preview-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.preview-meta span{border:1px solid #d9e1e8;border-radius:999px;padding:7px 10px;color:#526170;font-size:.95rem;font-weight:800}.distance-grid{display:grid;gap:10px;margin-top:14px}.distance-grid-heading{display:flex;justify-content:space-between;gap:12px;color:#526170;font-size:.92rem;font-weight:900}.distance-grid-heading strong{color:#9b3d2e}.distance-grid-items{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.distance-grid-items>div{display:grid;gap:4px;min-height:66px;border:1px solid #d9e1e8;border-radius:6px;background:#f8fafb;padding:10px}.distance-grid-items span{color:#65727e;font-size:.8rem;font-weight:900}.distance-grid-items strong{color:#17202a;font-size:1.02rem}.suggested-distance-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.suggested-distance-list>div{display:flex;justify-content:space-between;gap:8px;align-items:center;border:1px dashed #b8cad2;border-radius:6px;background:#f8fcfd;padding:9px 10px}.suggested-distance-list span{color:#526170;font-size:.82rem;font-weight:900}.suggested-distance-list strong{color:#2e6f87;font-size:.9rem}.position-editor{display:grid;gap:10px;margin-top:16px}.position-editor-grid{display:grid;gap:8px}.position-row{display:grid;grid-template-columns:minmax(210px,1fr) 110px 110px;gap:10px;align-items:center;border:1px solid #d9e1e8;border-radius:8px;background:#fff;padding:10px}.position-product{display:flex;align-items:center;gap:10px;min-width:0}.position-product img,.seat-thumbnail{width:46px;height:46px;flex:0 0 auto;border:1px solid #d9e1e8;border-radius:6px;background:#f8fafb;object-fit:cover}.seat-thumbnail{display:grid;place-items:center;color:#fff;background:#2e6f87;font-size:.76rem;font-weight:900}.position-product div{display:grid;gap:2px;min-width:0}.position-product strong{color:#17202a;font-size:.94rem}.position-product span{overflow:hidden;color:#65727e;font-size:.82rem;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.coordinate-input{gap:4px;color:#65727e;font-size:.78rem;font-weight:900}.coordinate-input input{min-height:42px;padding:8px 9px;font-size:.95rem}.recommendations ol{display:grid;gap:12px;margin:0;padding-left:22px}.recommendations li{color:#344250;font-size:1.03rem;line-height:1.5}@media(max-width:920px){.app-shell{padding:20px}.workspace-grid,.brand-bar,.hero-row{grid-template-columns:1fr}.brand-bar{display:grid;align-items:start}.brand-logo-frame{width:190px;height:76px}.workspace-grid{gap:14px}}@media(max-width:560px){.app-shell{padding:14px}.panel{padding:16px}.brand-logo-frame{width:160px;height:66px}.logo-lockup{align-items:start;flex-direction:column}.app-header h1{font-size:2.35rem}.dimension-grid,.segmented{grid-template-columns:1fr}.score-hero{align-items:start}.score-ring{width:112px}.score-ring strong{font-size:2.25rem}.toolbar,.score-comparison,.advanced-grid,.distance-grid-items,.suggested-distance-list,.position-row{grid-template-columns:1fr}}
