:root {
      --bg:#ffffff; --bg-soft:#f6f7fb; --panel:#ffffff;
      --ink:#0b1220; --muted:#5b6573; --line:#e9ebf2;
      --accent:#4f46e5; --accent-d:#4338ca; --accent-soft:#eef2ff;
      --warn:#b42318;
      --radius:16px; --radius-sm:10px; --maxw:1080px;
      --shadow-sm:0 1px 2px rgba(16,24,40,.05);
      --shadow:0 1px 2px rgba(16,24,40,.04),0 18px 44px rgba(16,24,40,.10);
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,system-ui,sans-serif;
    }
    *{box-sizing:border-box}
    /* Fonte musical livre p/ a partitura interativa (só baixa quando usada). */
    @font-face{font-family:'Bravura';src:url('/assets/Bravura.ttf') format('truetype');font-display:swap}
    html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
      -webkit-font-smoothing:antialiased;line-height:1.5}
    a{color:inherit;text-decoration:none}
    .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
    /* header */
    header.site{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.82);
      backdrop-filter:saturate(180%) blur(12px);
      -webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
    .nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .brand{display:flex;align-items:center;flex:0 0 auto}
    .brand-logo{display:block;width:auto;height:38px}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
      clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .nav-links{display:flex;align-items:center;gap:26px}
    .nav-links a{color:var(--muted);font-size:14px;font-weight:600}
    .nav-links a:hover{color:var(--ink)}
    .btn,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;
      height:44px;padding:0 18px;border:0;border-radius:11px;background:var(--accent);
      color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:.15s;white-space:nowrap}
    .btn:hover,.button:hover{background:var(--accent-d)}
    .btn.lg{height:52px;padding:0 26px;font-size:15px}
    .btn.ghost,.button.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
    .btn.ghost:hover,.button.secondary:hover{background:var(--bg-soft)}
    .btn:disabled{opacity:.6;cursor:wait}
    .btn-spin{display:none;width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.44);
      border-top-color:#fff;animation:sp .8s linear infinite;flex:none}
    body.busy .submit .btn-spin{display:block}
    /* hero */
    main{min-height:calc(100vh - 64px)}
    .hero{text-align:center;padding:66px 0 26px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
      border-radius:999px;background:var(--accent-soft);color:var(--accent-d);
      font-size:13px;font-weight:600}
    .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
    h1.title{margin:18px auto 0;font-size:clamp(34px,5.4vw,58px);line-height:1.04;
      letter-spacing:-.025em;font-weight:800;max-width:760px}
    h1.title span{color:var(--accent)}
    .lead{margin:18px auto 0;max-width:600px;color:var(--muted);font-size:19px}
    .hero-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:22px}
    /* upload card */
    .upload{max-width:560px;margin:30px auto 0}
    .drop{display:flex;flex-direction:column;align-items:center;gap:5px;width:100%;
      padding:30px 22px;border:1.5px dashed #c4c9d6;border-radius:var(--radius);
      background:var(--bg-soft);cursor:pointer;transition:.15s}
    .drop:hover,.drop.drag{border-color:var(--accent);background:var(--accent-soft)}
    .drop.ready{border-color:#78c6a3;background:#f0fbf5}
    .drop.invalid{border-color:#ef9a9a;background:#fff7f7}
    .drop .ico{width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line);
      display:grid;place-items:center;color:var(--accent);font-weight:800;font-size:12px;margin-bottom:6px}
    .drop strong{font-size:16px}
    .drop .hint{color:var(--muted);font-size:13px}
    .hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0)}
    .ack{display:flex;gap:9px;align-items:flex-start;margin-top:14px;text-align:left;
      color:var(--muted);font-size:12.5px;line-height:1.4}
    .ack input{width:16px;height:16px;margin-top:1px;accent-color:var(--accent);flex:none}
    .ack a{color:var(--accent);font-weight:600}
    .ack.invalid{color:var(--warn)}
    .field-error{display:none;margin:6px 0 0 25px;text-align:left;color:var(--warn);
      font-size:12.5px;font-weight:600}
    .field-error.show{display:block}
    .submit{width:100%;margin-top:14px}
    .status{margin-top:12px;font-size:13px;color:var(--muted);text-align:center;min-height:18px}
    body.busy .status{color:var(--accent-d)}
    .loading{display:none;margin-top:10px;color:var(--accent-d);font-size:13px;font-weight:600}
    body.busy .loading{display:grid;gap:8px;justify-items:center}
    .loading-row{display:flex;align-items:center;justify-content:center;gap:9px}
    .progress-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;width:100%}
    .progress-step{height:4px;border-radius:999px;background:#e4e7f7;overflow:hidden}
    .progress-step.active{background:var(--accent)}
    .spin{width:16px;height:16px;border-radius:50%;border:2px solid #c7cdf5;
      border-top-color:var(--accent);animation:sp .8s linear infinite}
    @keyframes sp{to{transform:rotate(360deg)}}
    .reassure{margin-top:18px;color:var(--muted);font-size:13px}
    /* sections */
    section.block{padding:46px 0}
    .sec-head{text-align:center;max-width:640px;margin:0 auto 30px}
    .sec-head h2{font-size:28px;letter-spacing:-.02em;margin:0 0 8px}
    .sec-head p{color:var(--muted);margin:0;font-size:16px}
    .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
      padding:24px;box-shadow:var(--shadow-sm)}
    .card .ci{width:42px;height:42px;border-radius:11px;background:var(--accent-soft);
      color:var(--accent-d);display:grid;place-items:center;margin-bottom:14px}
    .card .ci svg{width:22px;height:22px}
    .card h3{margin:0 0 6px;font-size:16px}
    .card p{margin:0;color:var(--muted);font-size:14px}
    .guide-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .guide-card{display:block}
    .guide-card:hover{border-color:#c7cdf5;box-shadow:var(--shadow)}
    .guide-card span{display:block;color:var(--accent-d);font-size:12px;font-weight:700;margin-bottom:8px}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:s}
    .step{position:relative;padding-left:54px}
    .step:before{counter-increment:s;content:counter(s);position:absolute;left:0;top:2px;
      width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;
      display:grid;place-items:center;font-weight:700}
    .step h3{margin:2px 0 4px;font-size:16px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .info-block{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px;align-items:start}
    .info-copy h2{font-size:28px;letter-spacing:-.02em;margin:0 0 10px}
    .info-copy p{margin:0;color:var(--muted);font-size:16px}
    .faq{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px;background:#fff}
    .faq-item h3{margin:0 0 5px;font-size:15px}
    .faq-item p{margin:0;color:var(--muted);font-size:14px}
    .article{max-width:860px;margin:0 auto;padding:56px 0}
    .article-hero{text-align:center;margin-bottom:30px}
    .article-hero h1{font-size:clamp(32px,5vw,52px);line-height:1.05;letter-spacing:-.025em;margin:18px 0 0}
    .article-hero p{max-width:660px;margin:16px auto 0;color:var(--muted);font-size:18px}
    .article-cta{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:22px}
    .article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:24px}
    .article-section{padding:20px}
    .article-section h2{font-size:17px;margin:0 0 7px}
    .article-section p{font-size:14px;color:var(--muted);margin:0}
    .article-faq{margin-top:34px}
    .article-faq h2{text-align:center;font-size:26px;margin:0 0 18px}
    /* panels / legal / errors (reused by other pages) */
    .panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .notice-box{border:1px solid #c9dbf3;background:#eff5ff;color:#1e3a5f;
      border-radius:var(--radius-sm);padding:14px;font-size:13.5px;line-height:1.45}
    .inline-link{color:var(--accent);font-weight:600}
    .inline-link:hover{text-decoration:underline}
    .small{font-size:12px;color:var(--muted)}
    .actions{display:flex;gap:10px;flex-wrap:wrap}
    .legal-page{max-width:820px;margin:32px auto;padding:30px}
    .legal-page h1{font-size:30px;letter-spacing:-.02em;margin:6px 0 0}
    .legal-page h2{font-size:17px;margin:18px 0 6px}
    .legal-page p{color:var(--muted);margin:6px 0}
    .legal-page ul{margin:6px 0;padding-left:20px;color:var(--muted);line-height:1.7}
    .error{max-width:560px;margin:48px auto;padding:30px;text-align:center}
    .error h1{color:var(--warn);font-size:24px;margin:0 0 8px}
    .error p{color:var(--muted);margin:0 0 18px}
    /* result */
    .result{display:grid;grid-template-columns:330px minmax(0,1fr);gap:18px;
      padding:20px 0 28px;align-items:start}
    .result .side{padding:22px;display:flex;flex-direction:column;gap:16px}
    .result h1{font-size:20px;letter-spacing:-.01em;margin:8px 0 0}
    .src{font-size:13px;color:var(--muted);overflow-wrap:anywhere;margin-top:4px}
    .success-note{display:grid;gap:4px;border:1px solid #b8e2c8;background:#f0fbf5;color:#166534;
      border-radius:var(--radius-sm);padding:13px;font-size:13.5px;line-height:1.4}
    .success-note strong{color:#14532d}
    .metrics{display:grid;gap:8px}
    .metric{display:flex;justify-content:space-between;align-items:center;
      border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 13px}
    .metric span{color:var(--muted);font-size:12.5px}
    .metric strong{font-size:15px;overflow-wrap:anywhere;text-align:right}
    .result-actions{display:grid;grid-template-columns:1fr;gap:9px}
    .result-actions .btn{width:100%}
    .use-stack{display:flex;flex-direction:column;gap:15px}
    .use-label{display:flex;align-items:center;gap:7px;margin:0 0 9px;font-size:12.5px;
      font-weight:600;color:var(--muted)}
    .use-label svg{width:16px;height:16px;color:var(--accent-d);flex:none}
    .use-actions{display:grid;gap:8px}
    .use-actions.two{grid-template-columns:1fr 1fr}
    .use-actions .btn{width:100%}
    .use-hint{margin:7px 0 0;font-size:11.5px;color:var(--muted);line-height:1.4}
    .btn.block{width:100%}
    .player{display:flex;flex-direction:column;gap:9px}
    .pl-top{display:grid;grid-template-columns:1fr 1fr;gap:8px}
    .pl-top .btn{width:100%}
    .pl-bar{height:8px;border-radius:5px;background:#e4e7f7;cursor:pointer;overflow:hidden}
    .pl-fill{height:100%;width:0;background:var(--accent);border-radius:5px}
    .pl-info{display:flex;justify-content:space-between;font-size:11.5px;color:var(--muted)}
    .pl-ctrls{display:flex;flex-direction:column;gap:8px;margin-top:2px}
    .pl-ctl{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted)}
    .pl-ctl input[type=range]{flex:1;accent-color:var(--accent)}
    .pl-ctl span:last-child{min-width:40px;text-align:right}
    .pl-check input{accent-color:var(--accent);width:15px;height:15px}
    /* Resultado v2: menu enxuto + viewer central com abas + transporte */
    .result2{display:grid;grid-template-columns:212px minmax(0,1fr);gap:16px;
      padding:18px 0 28px;align-items:start}
    .side2{padding:18px;display:flex;flex-direction:column;gap:14px}
    .side2 h1{font-size:18px;letter-spacing:-.01em;margin:8px 0 0}
    .metrics2{font-size:12px;color:var(--muted);line-height:1.5}
    .dl{display:flex;flex-direction:column;gap:7px}
    .dl-label{font-size:11.5px;font-weight:600;color:var(--muted)}
    .dl .btn{width:100%}
    .viewer2{padding:0;overflow:hidden;display:flex;flex-direction:column;
      height:calc(100vh - 122px);min-height:560px}
    .tabs{display:flex;gap:4px;padding:8px 8px 0;border-bottom:1px solid var(--line);flex:none}
    .tab{appearance:none;border:0;background:transparent;padding:9px 15px;font-size:13px;
      font-weight:600;color:var(--muted);cursor:pointer;border-radius:9px 9px 0 0}
    .tab:hover{color:var(--ink)}
    .tab.active{color:var(--accent-d);background:var(--accent-soft)}
    /* "Editar" = modo separado da reprodução (alinhado à direita das abas) */
    .tab-edit{margin-left:auto;display:flex;align-items:center;gap:6px;font-size:13px;
      font-weight:600;color:var(--muted);cursor:pointer;padding:7px 13px;border-radius:9px;
      border:1px solid var(--line);background:#fff}
    .tab-edit:hover{color:var(--ink);border-color:#c9c9de}
    .tab-edit input{position:absolute;opacity:0;width:0;height:0}
    .tab-edit:has(input:checked){color:var(--accent-d);background:var(--accent-soft);
      border-color:var(--accent)}
    .ep-tom{align-items:center}
    .ep-tomv{flex:1;text-align:center;font-weight:600;font-size:13px;color:var(--ink)}
    /* cabeçalho do viewer: rótulo + entrada em DESTAQUE pro editor */
    .vhead{display:flex;align-items:center;justify-content:space-between;gap:10px;
      padding:9px 12px;border-bottom:1px solid var(--line);flex:none}
    .vhead-label{font-size:13px;font-weight:600;color:var(--accent-d)}
    .vhead-edit{height:36px;padding:0 15px;font-size:13px;gap:7px}
    .edit-side{width:100%}
    .vbody{flex:1;min-height:0;position:relative}
    .vbody>.pa-host,.vbody>iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#fff}
    .vpane{position:absolute;inset:0}
    .vpane[hidden]{display:none}
    .vpane iframe{width:100%;height:100%;border:0;background:#fff}
    .transport{display:flex;align-items:center;gap:12px;padding:10px 14px;
      border-top:1px solid var(--line);flex:none;flex-wrap:wrap}
    .tbtn{flex:none;width:40px;height:40px;border-radius:50%;border:0;background:var(--accent);
      color:#fff;font-size:14px;cursor:pointer}
    .tbtn:hover{background:var(--accent-d)}
    .transport .pl-bar{flex:1;min-width:120px}
    .t-time,.t-meas{font-size:11.5px;color:var(--muted);flex:none}
    .t-ctl{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted);flex:none}
    .t-ctl input[type=range]{width:78px;accent-color:var(--accent)}
    .t-ctl select{height:30px;border:1px solid var(--line);border-radius:8px;background:#fff;
      color:var(--ink);font-size:12.5px;padding:0 6px}
    .t-ctl input[type=checkbox]{accent-color:var(--accent);width:15px;height:15px}
    .tstep{width:24px;height:24px;border:1px solid var(--line);border-radius:7px;
      background:#fff;color:var(--ink);font-size:14px;line-height:1;cursor:pointer}
    .tstep:hover{background:var(--bg-soft)}
    #tp-val{min-width:22px;text-align:center;display:inline-block;font-weight:600;color:var(--ink)}
    /* partitura interativa */
    .pa-host{height:100%;overflow:auto;background:#fff;padding:8px}
    .pa-page{position:relative;margin:0 auto 10px;width:100%}
    .pa-page svg{display:block;width:100%;height:auto}
    .pa-cursor{position:absolute;width:2.5px;border-radius:2px;background:var(--accent);
      opacity:.6;pointer-events:none;display:none;top:0;left:0}
    .nh{pointer-events:none}
    .pa-host.editing .nh{pointer-events:auto;cursor:pointer}
    .pa-host.editing.drawing{cursor:crosshair}
    .pa-host.editing.drawing .nh{cursor:crosshair}
    .pa-host.editing .nh:hover{fill:var(--accent);fill-opacity:.14}
    .nh.sel{fill:var(--accent);fill-opacity:.3;stroke:var(--accent);stroke-width:1}
    .ed-palette{position:absolute;top:10px;right:10px;z-index:5;background:#fff;
      border:0.5px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
      padding:10px;display:flex;flex-direction:column;gap:5px;width:120px}
    .ep-lbl{font-size:10.5px;font-weight:600;color:var(--muted);margin-top:3px}
    .ep-row{display:flex;gap:5px}
    .ep-btn{flex:1;height:30px;border:1px solid var(--line);border-radius:7px;background:#fff;
      color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center}
    .ep-btn:hover{background:var(--bg-soft)}
    .ep-btn.active{border:1.5px solid var(--accent);background:var(--accent-soft);color:var(--accent-d)}
    .ep-gly{font-size:17px}
    /* Página do EDITOR: superfície própria — paleta fixa (dock) + partitura */
    .edhead{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:14px 0 12px}
    .edhead h1{font-size:19px;letter-spacing:-.01em;margin:0;flex:1;min-width:200px}
    .edtag{font-size:11px;font-weight:600;background:var(--accent-soft);color:var(--accent-d);
      padding:3px 9px;border-radius:999px;vertical-align:2px;margin-left:6px}
    .eddl{display:flex;gap:8px;flex-wrap:wrap}
    .eddl .btn{height:36px;padding:0 13px;font-size:12.5px}
    .edshell{display:grid;grid-template-columns:150px minmax(0,1fr);
      grid-template-rows:minmax(0,1fr) auto;overflow:hidden;padding:0;
      height:calc(100vh - 158px);min-height:520px}
    .eddock{grid-row:1;grid-column:1;border-right:1px solid var(--line);
      padding:12px 10px;overflow:auto;background:#fff}
    .eddock .ed-palette{position:static;width:auto;box-shadow:none;border:0;padding:0}
    .edmain{grid-row:1;grid-column:2;min-height:0}
    .edshell .transport{grid-row:2;grid-column:1/-1}
    @media(max-width:820px){.edshell{grid-template-columns:120px minmax(0,1fr)}}
    .ep-txt{font-size:10.5px;font-weight:600}
    .ep-btn:disabled{opacity:.45;cursor:default}
    .ep-hint{font-size:10.5px;color:var(--muted);margin-top:3px;line-height:1.3}
    @media(max-width:820px){.result2{grid-template-columns:1fr}.viewer2{height:auto}
      .vbody{height:62vh}.transport{gap:9px}}
    .viewer{padding:10px;height:calc(100vh - 116px);min-height:560px}
    .viewer iframe{width:100%;height:100%;border:0;border-radius:12px;background:#fff}
    /* footer */
    footer.site{border-top:1px solid var(--line);margin-top:22px;background:var(--bg-soft)}
    .foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
      padding:22px 0;color:var(--muted);font-size:13px}
    .foot a{color:var(--muted);font-weight:600}
    .foot a:hover{color:var(--ink)}
    .foot-links{display:flex;gap:18px;flex-wrap:wrap}
    @media(max-width:820px){
      .grid3,.guide-grid,.steps,.info-block,.article-grid{grid-template-columns:1fr}
      .result{grid-template-columns:1fr}
      .viewer{height:72vh}
      .nav-links{display:none}
      .nav .btn{display:none}
      .hero{padding-top:44px}
      .brand-logo{height:34px}
    }