:root{color-scheme:light;--paper:#edf1f3;--white:#fff;--ink:#102931;--dim:#526871;--line:#dbe5e8;--teal:#08796e;--tint:#e0f4ef;--navy:#102c36;--reference:#7e93a1;--accent:#f0a457;font:15px/1.5 system-ui,-apple-system,"PingFang SC",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink)}[hidden]{display:none!important}.mast{min-height:68px;display:flex;align-items:center;justify-content:space-between;padding:12px max(24px,calc((100vw - 1500px)/2));background:var(--navy);color:#fff;gap:12px}.brand{display:flex;gap:12px;align-items:center;font-weight:760;letter-spacing:.06em}.brand small{display:block;color:#a4c2c7;font-size:10px;letter-spacing:.19em}.mark{width:37px;height:37px;border:1px solid #437179;border-radius:9px;color:#82e3cc;display:grid;place-items:center;font-size:27px}.pill{border:1px solid #527980;border-radius:100px;padding:5px 12px;color:#d0eeeb;font-size:12px;white-space:nowrap}main{max-width:1548px;margin:auto;padding:0 24px}.intro{display:flex;justify-content:space-between;align-items:flex-end;margin:28px 0 24px;gap:18px}.eyebrow{font-size:12px;letter-spacing:.18em;font-weight:800;color:var(--teal);margin:0}.intro h1{font-size:clamp(30px,4.5vw,50px);line-height:1.2;margin:7px 0 8px;letter-spacing:-.035em}.intro p:not(.eyebrow){margin:0;color:var(--dim)}.intro-aside{padding:8px 0 8px 16px;border-left:2px solid #add3ce;color:var(--dim);font-size:13px}.intro-aside strong{color:var(--ink)}.layout{display:grid;grid-template-columns:minmax(235px,265px) minmax(355px,1.55fr) minmax(300px,1fr);gap:14px;align-items:start}.card{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:16px;min-width:0}.section-title{display:flex;gap:9px;align-items:center;margin-bottom:14px}.index{padding:2px 5px;color:var(--teal);background:var(--tint);border-radius:4px;font:700 12px/1.4 ui-monospace,monospace}.caption{margin-left:auto;color:var(--dim);font-size:11px}.hint{color:var(--dim);font-size:12px;margin:8px 0}h2,h3{margin:0}h2{font-size:17px}h3{font-size:14px}.unit{font-size:11px;font-weight:500;color:var(--dim)}button,select,input{font:inherit}button{border:1px solid #cddbdc;border-radius:8px;background:#fff;color:var(--ink);padding:7px 10px;cursor:pointer;font-size:13px}button:hover{border-color:var(--teal)}button:disabled{opacity:.5;cursor:default}button:focus-visible,input:focus-visible,canvas:focus-visible,select:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.primary{background:var(--teal);border-color:var(--teal);color:white;font-weight:700}.primary:hover{background:#06685f}.quiet{background:#f2f6f6}.toggle{display:inline-flex;gap:3px;background:#eff4f4;border-radius:9px;padding:3px}.toggle button{border-color:transparent;background:transparent}.toggle button[aria-pressed=true]{background:#fff;border-color:#d5e5e1;color:var(--teal);font-weight:800}.field-head{font-size:13px;font-weight:750;margin-bottom:5px}.controls details{border-top:1px solid var(--line);margin-top:12px;padding-top:10px}.controls summary{cursor:pointer;font-weight:700;font-size:14px}.param{margin:8px 0 10px}.param label{font-size:12px;display:block}.param small{color:var(--dim);margin-left:4px;font-size:10px}.param div{display:flex;align-items:center;gap:8px}.param input[type=range]{width:100%;min-width:0;accent-color:var(--teal);margin:0}.param input[type=number]{width:67px;padding:2px 4px}.param input[type=number],select,#scan input{border:1px solid var(--line);border-radius:5px;background:#fcfdfd;color:var(--ink);font-size:12px}.control-actions{display:grid;gap:6px;margin-top:12px}.viewbar,.row,.plot-label,.mesh-options{display:flex;align-items:center;justify-content:space-between;gap:8px}.legend{display:flex;align-items:center;gap:5px;color:var(--dim);font-size:11px;white-space:nowrap}.legend i{width:12px;height:3px;background:var(--teal);display:inline-block}.legend .ref{background:var(--reference);margin-left:3px}.viewport{margin:8px 0;background:#f1f8f7;border:1px solid #dcece9;border-radius:10px;overflow:hidden}.viewport canvas{width:100%;height:340px;display:block}.mesh-options{font-size:12px}.mesh-options input{accent-color:var(--teal)}#mesh{cursor:grab;touch-action:none;background:#132e38}#mesh:active{cursor:grabbing}.chart{display:block;width:100%;height:145px}.audio-item strong{font-size:12px}.audio-item audio{display:block;width:100%;height:38px;margin:5px 0 10px}.actions{justify-content:flex-start;margin-bottom:14px}.plot-label{margin-top:10px}.peaks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.peak{padding:4px 7px;background:#eef6f4;border-radius:5px;font-size:11px;white-space:nowrap}.peak b{display:block;font-size:13px}.peak span{color:var(--dim)}.sweep{grid-column:2 / -1}.sweep form{display:flex;align-items:end;gap:8px;flex-wrap:wrap}.sweep label{font-size:12px;font-weight:700}.sweep select,.sweep input{display:block;width:84px;height:31px;margin-top:4px;padding:4px}.sweep select{width:155px}.sweep .chart{height:185px;margin-top:10px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:12px;text-align:right}th,td{padding:4px 8px;border-bottom:1px solid var(--line)}th{background:#f2f7f6}#status{min-height:24px;color:var(--teal);font-size:13px;margin:10px 0}#status.error{color:#992e29}footer{display:flex;justify-content:space-between;gap:10px;border-top:1px solid #cfdbdf;padding:12px 0 18px;font-size:11px;color:var(--dim)}
@media(max-width:1120px){.layout{grid-template-columns:minmax(220px,265px) minmax(340px,1fr)}.controls{grid-row:span 2}.acoustics,.sweep{grid-column:2}}
@media(max-width:700px){main{padding:0 12px}.mast{padding:10px 12px}.intro{align-items:start;flex-direction:column;margin:20px 0 16px;gap:9px}.layout{grid-template-columns:minmax(0,1fr)}.controls,.acoustics,.sweep{grid-row:auto;grid-column:auto}.viewport canvas{height:290px}.card{padding:13px}.pill{font-size:10px}.intro-aside{padding:1px 0 1px 9px}}