:root{
    --bg:#F2F9FF; --head:#FFFFFF; --card:#FFFFFF; --line:#CBE7F8;
    --yellow:#00A9E0; --yellow-btn:#0073E6; --white:#0A2A5C; --sub:#527494;
  }
  *,*::before,*::after{box-sizing:border-box}
  body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul,ol{padding:0}
  html{scroll-behavior:smooth}
  html,body{overflow-x:clip}
  body{background:var(--bg);color:var(--white);font-family:'Inter',Arial,sans-serif;font-size:16px;line-height:1.55}
  h1,h2,h3{font-family:'Poppins',Arial,sans-serif;line-height:1.2}
  .wrap{max-width:760px;margin:0 auto;padding:0 18px}
  header.site{position:sticky;top:0;z-index:40;border-bottom:2px solid var(--yellow);
    background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='12' viewBox='0 0 180 12'%3E%3Cpath d='M0 7 Q22.5 0 45 7 T90 7 T135 7 T180 7 V12 H0 Z' fill='%23ffffff' fill-opacity='0.30'/%3E%3C/svg%3E") bottom left/180px 12px repeat-x,linear-gradient(94deg,#0067E8,#0099E8 55%,#00BCEF);
    animation:waveSlide 11s linear infinite}
  @keyframes waveSlide{from{background-position:0 100%,0 0}to{background-position:180px 100%,0 0}}
  .head-in{max-width:1080px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:flex-start;gap:10px}
  .topnav{margin-left:auto}
  .head-actions{margin-left:6px}
  .logo{display:flex;align-items:center;gap:10px;color:#FFFFFF;text-decoration:none}
  .logo img{height:84px;width:auto;display:block}
  .safety-note{max-width:560px;margin:30px auto 0;text-align:center;font-size:13.5px;line-height:1.5;color:var(--sub)}
  .safety-note a{color:var(--yellow-btn);font-weight:700}
  .fb-row{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
  .fb-btn{font:inherit;font-size:13.5px;font-weight:600;padding:7px 14px;border-radius:999px;border:1.5px solid var(--yellow-btn);background:#FFFFFF;color:var(--white);cursor:pointer}
  .fb-btn:hover{background:#DFF2FE}
  .logo b{font-family:'Baloo 2','Poppins',sans-serif;font-size:26px;font-weight:800;line-height:1.05;display:block}
  .logo .brand-l2{margin-left:20px}
  .logo span{font-size:13px;color:#FFFFFF;font-weight:700;letter-spacing:2px}
  @media (max-width:560px){
    .head-in{padding:12px}
    .logo{flex:none;gap:8px}
    .logo img{height:74px}
    .logo b{font-size:21px;white-space:nowrap}
    .logo .brand-l2{margin-left:16px}
    .logo span{font-size:12px;white-space:nowrap}
  }
  .brand-accent{color:#FFFFFF}
  @supports ((-webkit-background-clip:text) or (background-clip:text)){
    .brand-accent{background:linear-gradient(100deg,#FFFFFF 25%,#AEE9FF 50%,#FFFFFF 75%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:brandShine 5.5s ease-in-out infinite}
  }
  @keyframes brandShine{0%,100%{background-position:110% 0}50%{background-position:-10% 0}}
  .burger{background:var(--card);border:2px solid var(--line);border-radius:10px;width:46px;height:46px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px}
  .burger i{display:block;width:22px;height:3px;background:var(--yellow);border-radius:2px}
  .burger:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
  .topnav{display:none}
  .head-actions{display:flex;align-items:center;gap:9px;margin-left:auto}
  @media (min-width:920px){ .head-actions{margin-left:6px} }
  .icon-btn{background:var(--card);border:2px solid var(--line);border-radius:10px;width:46px;height:46px;cursor:pointer;display:flex;align-items:center;justify-content:center}
  .icon-btn:hover{border-color:var(--yellow)}
  @media (min-width:920px){
    .topnav{display:flex;align-items:center;gap:4px}
    .topnav .tn{background:none;border:none;color:#FFFFFF;font-family:'Poppins';font-size:16px;font-weight:600;padding:10px 13px;cursor:pointer;border-bottom:3px solid transparent}
    .topnav .tn:hover{color:#BFEFF5}
    .topnav .tn.active{border-bottom-color:#FFFFFF}
    .burger{display:none}
  }
  .legal-drop{position:absolute;right:14px;top:calc(100% + 4px);background:#FFFFFF;border:1px solid var(--line);border-radius:12px;padding:8px;z-index:60;min-width:210px;box-shadow:0 14px 34px rgba(3,80,90,.55)}
  .legal-drop[hidden]{display:none}
  .legal-drop button{display:block;width:100%;background:none;border:none;color:var(--white);font-family:'Inter';font-size:15px;font-weight:600;text-align:left;padding:11px 12px;border-radius:8px;cursor:pointer}
  .legal-drop button:hover{background:var(--card);color:var(--yellow)}
  header.site{position:sticky}
  .tools-drop{position:absolute;left:0;right:0;top:100%;background:#FFFFFF;border-bottom:2px solid var(--yellow);z-index:59;padding:10px 14px 12px;box-shadow:0 18px 34px rgba(3,80,90,.55);max-height:70vh;overflow-y:auto}
  .tools-drop[hidden]{display:none}
  .td-grid{max-width:980px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:0 14px}
  .td-grid button{background:none;border:none;color:var(--white);font-family:'Inter';font-size:14.5px;font-weight:600;text-align:left;padding:9px 6px;cursor:pointer;border-radius:8px}
  .td-grid button:hover{color:var(--yellow);background:#DFF2FE}
  .td-models{max-width:980px;margin:8px auto 0;border-top:1px solid var(--line);padding-top:8px}
  .td-models p{font-size:17px;font-weight:800;letter-spacing:2px;color:var(--white);text-align:center;width:fit-content;margin:12px auto 8px;padding:6px 20px;border:2px solid var(--yellow);border-radius:999px;background:#DFF2FE;animation:modelPop .45s ease both,modelGlow 2.6s ease-in-out .6s infinite}
  @keyframes modelPop{from{opacity:0;transform:translateY(-5px) scale(.9)}to{opacity:1;transform:none}}
  @keyframes modelGlow{0%,100%{box-shadow:0 0 0 0 rgba(0,169,224,.35)}50%{box-shadow:0 0 0 6px rgba(0,169,224,0)}}
  @media (prefers-reduced-motion:reduce){.td-models p,.menu-group.model-head,header.site,.brand-accent{animation:none}}
  @media (max-width:919px){ .td-grid{grid-template-columns:repeat(2,1fr)} }
  .td-cols{max-width:980px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:0 22px}
  .td-col a{display:block;text-align:center}
  .td-all{max-width:980px;margin:0 auto}
  .navstrip{display:none}
  @media (max-width:919px){
    .navstrip{display:flex;gap:26px;justify-content:flex-start;overflow-x:auto;padding:1px 16px 10px;scrollbar-width:none}
    .navstrip>*:first-child{margin-left:auto}
    .navstrip::-webkit-scrollbar{display:none}
    .navstrip button{flex:none;background:none;border:none;color:#FFFFFF;font-family:'Poppins';font-size:13px;font-weight:600;padding:8px 2px;cursor:pointer;white-space:nowrap;border-bottom:3px solid transparent}
    .navstrip button:hover{color:#BFEFF5}
  }
  .menu{position:fixed;inset:0;background:#FFFFFF;z-index:80;overflow-y:auto;padding:14px 18px 40px}
  .menu[hidden]{display:none}
  .menu-top{max-width:760px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
  .menu-top b{font-family:'Poppins';font-size:19px}
  .menu-top b em{font-style:normal;color:var(--yellow)}
  .menu-close{background:var(--card);border:2px solid var(--line);color:var(--white);width:46px;height:46px;border-radius:10px;font-size:20px;cursor:pointer}
  .menu-body{max-width:760px;margin:8px auto 0}
  .menu-group{color:var(--yellow);font-family:'Poppins';font-size:13px;font-weight:700;letter-spacing:2px;margin:22px 0 4px}
  .menu-group.model-head{font-size:16px;font-weight:800;color:var(--white);width:fit-content;margin:22px auto 6px;padding:6px 18px;border:2px solid var(--yellow);border-radius:999px;background:#DFF2FE;animation:modelPop .45s ease both,modelGlow 2.6s ease-in-out .6s infinite}
  .m-item{display:flex;width:100%;align-items:center;justify-content:space-between;gap:8px;background:none;border:none;border-bottom:1px solid var(--line);
    color:var(--white);font-family:'Poppins';font-size:18.5px;font-weight:600;text-align:left;padding:15px 4px;cursor:pointer}
  .m-item:hover{color:var(--yellow)}
  .m-item .chev{color:var(--yellow);font-size:15px;flex:none}
  .m-sub{display:none;padding:6px 0 12px 14px;border-bottom:1px solid var(--line)}
  .m-sub.open{display:block}
  .m-sub p{font-size:12.5px;color:var(--sub);margin:4px 0 8px}
  .m-chips{display:flex;flex-wrap:wrap;gap:5px;justify-content:center}
  .m-chip{min-height:34px;padding:5px 11px;border-radius:999px;border:2px solid var(--line);background:#FFFFFF;color:var(--white);font-family:'Inter';font-size:13px;font-weight:600;cursor:pointer}
  .m-chip:hover{border-color:var(--yellow);color:var(--yellow)}
  .m-note{font-size:12.5px;color:var(--sub);margin-top:16px}
  .tool-zone{padding:12px 0 8px;text-align:center}
  h1{font-size:clamp(27px,8vw,40px);font-weight:800;margin:6px 0 8px;overflow-wrap:break-word;text-wrap:balance}
  h1 .y{color:var(--yellow)}
  .sub{color:var(--sub);font-size:17px;max-width:520px;margin:0 auto}
  .chan-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px}
  .chan{min-height:50px;padding:10px 24px;border-radius:999px;border:2px solid var(--line);background:var(--card);color:var(--sub);font-family:'Poppins';font-size:16px;font-weight:700;cursor:pointer}
  .chan:hover{border-color:var(--yellow)}
  .chan.on{background:var(--yellow-btn);border-color:var(--yellow);color:#FFFFFF}
  .chan[disabled]{opacity:.6;cursor:default;font-size:13.5px}
  .chan[disabled]:hover{border-color:var(--line)}
  .chan:focus-visible,.m-chip:focus-visible,.round-btn:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
  .ring-wrap{position:relative;width:252px;height:252px;margin:26px auto 4px}
  .ring-wrap svg{transform:rotate(-90deg)}
  .ring-bg{fill:none;stroke:#D6EDFC;stroke-width:15}
  .ring-fg{fill:none;stroke:var(--yellow);stroke-width:15;stroke-linecap:round;transition:stroke-dashoffset .55s linear}
  .ring-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:0 30px}
  .ring-pct{font-family:'Poppins';font-size:36px;font-weight:800;line-height:1.1}
  .ring-wrap.playing #speakerIcon .wv{animation:wvPulse 1s ease-in-out infinite}
  .ring-wrap.playing #speakerIcon .wv:nth-child(3){animation-delay:.15s}
  .ring-wrap.playing #speakerIcon .wv:nth-child(4){animation-delay:.3s}
  @keyframes wvPulse{0%,100%{opacity:.25}50%{opacity:1}}
  .ring-status{font-size:13px;color:var(--sub);text-align:center;min-height:20px;max-width:172px;margin:2px auto 0;line-height:1.35}
  .round-btn{width:126px;height:126px;border-radius:50%;border:none;background:var(--yellow-btn);color:#FFFFFF;cursor:pointer;
    font-family:'Poppins';font-weight:800;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;margin:18px auto 6px;
    box-shadow:0 0 0 8px rgba(0,169,224,.20),0 10px 30px rgba(4,50,110,.45)}
  .round-btn .tri{font-size:30px;line-height:1}
  .round-btn .lbl{font-size:17px;letter-spacing:1px}
  .round-btn:hover{background:var(--yellow)}
  .round-btn.running{background:var(--white)}
  .session-line{font-size:13px;color:var(--sub);text-align:center;min-height:20px}
  .test-note{font-size:13px;color:var(--sub);text-align:center}
  .test-note[hidden]{display:none}
  .report{max-width:520px;margin:16px auto 0;background:var(--card);border:1px solid var(--line);border-left:5px solid var(--yellow);border-radius:12px;padding:14px 16px;text-align:left;font-size:14.5px}
  .report[hidden]{display:none}
  section.block{padding:38px 0 6px}
  h2.sec{font-size:clamp(21px,6vw,27px);font-weight:800;text-align:center;margin-bottom:8px;overflow-wrap:break-word;text-wrap:balance}
  h2.sec .y{color:var(--yellow)}
  .sec-sub{text-align:center;color:var(--sub);max-width:520px;margin:0 auto 22px;font-size:15.5px}
  .big-cta{display:block;width:100%;max-width:440px;margin:14px auto 0;min-height:58px;border:none;border-radius:14px;background:var(--yellow-btn);color:#FFFFFF;
    font-family:'Poppins';font-size:17px;font-weight:700;cursor:pointer;padding:12px}
  .big-cta:hover{background:var(--yellow)}
  .deep-band{text-align:center;padding-top:30px}
  .deep-band p{font-family:'Poppins';font-size:20px;font-weight:700}
  .proc{position:relative;border-radius:18px;padding:26px 22px 22px;margin-bottom:16px;background:var(--card);border:1px solid var(--line);overflow:hidden}
  .proc .num{position:absolute;top:6px;right:16px;font-family:'Poppins';font-size:74px;font-weight:800;color:var(--yellow);opacity:.9;line-height:1}
  .proc h3{font-size:19px;font-weight:700;letter-spacing:.4px;margin-bottom:8px;max-width:78%}
  .proc p{color:var(--sub);font-size:15px;max-width:88%}
  .proc.y{background:var(--yellow-btn);border-color:var(--yellow)}
  .proc.y .num{color:#FFFFFF}
  .proc.y h3{color:#FFFFFF}
  .proc.y p{color:#33300a}
  .step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px 22px 20px 92px;margin:34px 0 16px}
  .step .badge{position:absolute;left:18px;top:-22px;width:58px;height:58px;border-radius:50%;background:var(--yellow-btn);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(3,80,90,.45)}
  .step h3{font-size:17.5px;font-weight:700;letter-spacing:.4px;margin-bottom:6px}
  .step p{color:var(--sub);font-size:14.5px}
  .what p{color:var(--sub);font-size:15.5px;max-width:600px;margin:0 auto 14px;text-align:center}
  .what ul{max-width:560px;margin:0 auto;list-style:none}
  .what li{padding:9px 0 9px 22px;position:relative;color:var(--sub);font-size:15.5px;border-bottom:1px solid var(--line)}
  .what li::before{content:"";position:absolute;left:2px;top:17px;width:8px;height:8px;border-radius:2px;background:var(--yellow)}
  .what li b{color:var(--white)}
  .dev-card{display:block;width:100%;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:14px;cursor:pointer;color:var(--white)}
  .dev-card:hover{border-color:var(--yellow)}
  .dev-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
  .dev-card p{color:var(--sub);font-size:14.5px}
  .dev-card .open{color:var(--yellow);font-weight:700;font-size:14px;margin-top:8px;display:inline-block}
  .qc{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px}
  .qc h3{font-size:19px;margin-bottom:4px;text-align:center}
  .qc .q-sub{text-align:center;color:var(--sub);font-size:14px;margin-bottom:14px}
  .qc-btn{display:block;width:100%;min-height:52px;margin-bottom:9px;border-radius:12px;border:2px solid var(--line);background:#FFFFFF;color:var(--white);
    font-family:'Inter';font-size:15px;font-weight:600;cursor:pointer;padding:10px 14px;text-align:left}
  .qc-btn:hover{border-color:var(--yellow)}
  .honest{background:#FFFFFF;border:1px solid var(--line);border-radius:18px;padding:20px 22px;font-size:14.5px;color:var(--sub)}
  .honest b{color:var(--white)}
  details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:15px 18px;margin-bottom:10px}
  summary{font-family:'Poppins';font-weight:600;font-size:16px;cursor:pointer;min-height:28px}
  details p{color:var(--sub);font-size:14.5px;margin-top:8px}
  footer{background:var(--head);margin-top:44px;padding:30px 0 26px;border-top:2px solid var(--yellow)}
  footer h3{font-size:21px;margin-bottom:14px}
  .foot-list{list-style:none}
  .foot-list li{margin:9px 0}
  .foot-list button{background:none;border:none;color:var(--sub);font:inherit;font-size:15.5px;cursor:pointer;padding:2px 0;text-align:left}
  .foot-list button:hover{color:var(--yellow)}
  .foot-fine{color:#8a8a8a;font-size:12.5px;margin-top:20px}
  #toTop{position:fixed;right:16px;bottom:18px;width:54px;height:54px;border-radius:50%;border:none;background:var(--yellow-btn);color:#FFFFFF;font-size:22px;font-weight:800;cursor:pointer;box-shadow:0 8px 22px rgba(4,50,110,.45);z-index:50}
  #toTop[hidden]{display:none}
  .search-row{margin-top:18px}
  .search-row input{width:100%;min-height:58px;border-radius:14px;border:2px solid var(--yellow);background:#FFFFFF;color:#0A2A5C;font-family:'Inter';font-size:17px;padding:12px 16px}
  .search-row input:focus{outline:none;border-color:#0073E6}
  .s-head{font-family:'Poppins';font-size:12px;font-weight:700;letter-spacing:2px;color:#0073E6;margin:18px 0 2px}
  .s-result{display:flex;width:100%;align-items:center;gap:10px;background:none;border:none;border-bottom:1px solid var(--line);color:var(--white);font-family:'Inter';font-size:16px;font-weight:600;text-align:left;padding:14px 4px;cursor:pointer}
  .s-result:hover{color:var(--yellow)}
  .s-tag{flex:none;font-size:10.5px;font-weight:700;letter-spacing:1px;color:#FFFFFF;background:var(--yellow);border-radius:6px;padding:3px 7px}
  .s-none{color:var(--sub);padding:16px 4px;font-size:15px}
  .legal-text p{color:var(--sub);font-size:15.5px;margin-bottom:12px;max-width:640px}
  .legal-text b{color:var(--white)}
  .sample-tag{text-align:center;font-size:11.5px;color:#8a8a8a;padding:10px 0 22px}
  @media (max-width:520px){ .step{padding-left:22px;padding-top:44px} }

  /* ---- site additions: articles, test panel, hubs, forms ---- */
  .crumbs{font-size:13px;color:var(--sub);padding:16px 0 0}
  .crumbs a{color:var(--yellow);text-decoration:none}
  .page-hero{padding:30px 0 6px;text-align:center}
  .page-hero h1{font-size:clamp(25px,7vw,36px)}
  .meta-line{text-align:center;color:var(--sub);font-size:13.5px;margin-top:8px}
  .article{max-width:680px;margin:0 auto}
  .article p{color:var(--sub);font-size:16px;margin:0 0 14px}
  .article h2{font-size:23px;margin:24px 0 10px}
  .article ol,.article ul{margin:0 0 14px 20px;color:var(--sub);font-size:15.5px}
  .article li{margin-bottom:7px}
  .article li b,.article p b{color:var(--white)}
  .cta-box{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--yellow);border-radius:14px;padding:18px;margin:22px 0;text-align:center}
  .cta-box p{color:var(--white);font-family:'Poppins';font-weight:600;font-size:17px;margin-bottom:10px}
  .cta-box a{display:inline-block;background:var(--yellow-btn);color:#FFFFFF;font-family:'Poppins';font-weight:700;text-decoration:none;border-radius:12px;padding:12px 22px;min-height:50px}
  .cta-box a:hover{background:var(--yellow)}
  .dev-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  @media (max-width:620px){ .dev-grid{grid-template-columns:1fr} }
  .dev-grid .dev-card{margin-bottom:0;text-decoration:none}
  .test-panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;max-width:560px;margin:0 auto}
  .test-panel h3{font-size:19px;text-align:center;margin-bottom:4px}
  .test-panel .t-sub{text-align:center;color:var(--sub);font-size:14px;margin-bottom:16px}
  .t-status{text-align:center;font-family:'Poppins';font-weight:600;min-height:24px;margin-bottom:12px}
  .t-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
  .t-btn{min-height:52px;border-radius:12px;border:2px solid var(--line);background:#FFFFFF;color:var(--white);font-family:'Inter';font-size:15px;font-weight:600;cursor:pointer;padding:10px}
  .t-btn:hover{border-color:var(--yellow)}
  .t-btn.playing{background:var(--yellow-btn);color:#FFFFFF;border-color:var(--yellow)}
  .mic-meter{height:22px;border:2px solid var(--line);border-radius:999px;margin-top:16px;overflow:hidden;background:#FFFFFF}
  .mic-fill{height:100%;width:0%;background:var(--yellow);border-radius:999px;transition:width .1s linear}
  .bal-box{margin-top:18px;border:1.5px dashed var(--line);border-radius:14px;padding:14px}
  .bal-title{font-weight:700;font-size:16px}
  .bal-val{text-align:center;color:var(--sub);font-size:14px;font-weight:600;margin-top:8px}
  .t-row{margin-top:16px}
  .t-row label{font-size:13px;color:var(--sub);display:block;margin-bottom:6px}
  .t-results{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
  .t-res{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 0;border-bottom:1px solid var(--line);font-size:15px}
  .t-res .opts{display:flex;gap:6px}
  .t-res .opt{border:2px solid var(--line);background:#FFFFFF;color:var(--sub);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:600;cursor:pointer}
  .t-res .opt.on-good{background:var(--yellow-btn);color:#FFFFFF;border-color:var(--yellow)}
  .t-res .opt.on-bad{background:#fff;color:#FFFFFF;border-color:#fff}
  .c-form{max-width:520px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px}
  .c-form label{display:block;font-size:13.5px;color:var(--sub);margin:12px 0 6px}
  .c-form input,.c-form textarea{width:100%;border-radius:10px;border:2px solid var(--line);background:#FFFFFF;color:var(--white);font-family:'Inter';font-size:15px;padding:11px 12px}
  .c-form textarea{min-height:110px;resize:vertical}
  .rel-list{list-style:none}
  .rel-list li{margin:8px 0}
  .rel-list a{color:var(--yellow);text-decoration:none;font-weight:600}
  .model-note{background:#FFFFFF;border:1px solid var(--line);border-radius:14px;padding:16px 18px;color:var(--sub);font-size:15px}
  .model-note b{color:var(--white)}