:root{
  --bg:#07141f;--panel:#0f2633;--panel-2:#12323d;--text:#f5f7f6;--muted:#b8c8cc;--gold:#e0b95e;--accent:#34aaa7;--border:#2a4b57;
  --focus:#f0c96a;--danger:#ffb7ae;--shadow:0 12px 30px rgba(0,0,0,.14);--radius:16px;--max:1228px;
  --ts-body-size:17px;--ts-support-size:16px;--ts-touch-min:44px;--ts-gap:12px;--ts-section-gap:12px
}
html[data-theme="light"]{
  --bg:#f5f8f7;--panel:#ffffff;--panel-2:#e8f3f1;--text:#173038;--muted:#536a70;--gold:#87661d;--accent:#147b78;--border:#c6d8d5;
  --focus:#72550f;--danger:#8c2f27;--shadow:0 10px 26px rgba(31,69,75,.08)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:var(--ts-body-size);line-height:1.42}
a{color:var(--accent)}button,input,select{font:inherit}button{touch-action:manipulation}
.topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 95%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.topbar-inner{max-width:var(--max);margin:auto;min-height:56px;padding:6px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{min-height:44px;display:flex;align-items:center;gap:8px;color:var(--gold);font-weight:900;text-decoration:none;font-size:1.06rem;letter-spacing:.01em}.brand-mark{width:34px;height:34px;border:1px solid var(--gold);border-radius:10px;display:grid;place-items:center;font-size:var(--ts-support-size)}
.top-left{display:flex;align-items:center;gap:10px}.top-back{display:inline-flex;align-items:center;min-height:44px;padding:0 8px;border-radius:10px;text-decoration:none;font-weight:780}.top-actions{display:flex;gap:7px}.icon-btn,.secondary,.primary{border:1px solid var(--border);border-radius:11px;min-height:var(--ts-touch-min);padding:8px 13px;cursor:pointer}.icon-btn,.secondary{background:var(--panel);color:var(--text)}.primary{background:var(--accent);color:#061819;border-color:transparent;font-weight:800;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.primary:hover{filter:brightness(1.08)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
main{width:100%;max-width:var(--max);margin:0 auto;padding:10px 16px 18px;flex:1 0 auto}.breadcrumb{display:inline-flex;align-items:center;gap:7px;min-height:38px;text-decoration:none;font-weight:780;margin:0 0 2px}.eyebrow{color:var(--accent);font-weight:850;letter-spacing:.045em;text-transform:uppercase;font-size:var(--ts-support-size)}
.hero{padding:0 0 7px}.hero h1{font-size:clamp(2rem,3.1vw,2.45rem);line-height:1.06;letter-spacing:-.025em;margin:.12em 0 .12em}.hero p{max-width:930px;font-size:1rem;color:var(--muted);margin:0}
.status-strip{margin:6px 0 10px;padding:8px 12px;border:1px solid var(--border);background:var(--panel-2);border-radius:12px}.status-strip strong{color:var(--gold)}
h2{font-size:clamp(1.28rem,1.8vw,1.5rem);line-height:1.16;margin:18px 0 8px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--ts-gap)}
.card,.tool-panel,.result-panel,.info-panel,.bridge{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card{padding:14px;display:flex;flex-direction:column;min-height:auto}.card.active{border-color:color-mix(in srgb,var(--accent) 60%,var(--border))}.badge{font-size:var(--ts-support-size);font-weight:820;color:var(--accent);margin-bottom:5px}.card h3{font-size:1.12rem;line-height:1.2;margin:0 0 5px}.card p{color:var(--muted);margin:0 0 9px;flex:1}.card-foot{display:flex;justify-content:space-between;align-items:center;gap:8px}
.tool-layout{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);gap:var(--ts-gap);align-items:start}.tool-layout.wide-result{grid-template-columns:minmax(280px,.72fr) minmax(0,1.28fr)}.tool-panel,.result-panel,.info-panel,.bridge{padding:14px}.result-panel{position:sticky;top:66px}.tool-panel h2,.result-panel h2,.info-panel h2,.bridge h2{margin:0 0 8px}.tool-panel h2:not(:first-child){margin-top:12px}.tool-note{color:var(--muted);margin:0 0 8px}.big-result{font-variant-numeric:tabular-nums;font-size:clamp(2.65rem,5.3vw,4.25rem);font-weight:900;letter-spacing:-.045em;line-height:.98;color:var(--gold);margin:5px 0 2px}.result-unit{color:var(--muted);font-weight:750}.result-explainer{color:var(--muted);font-size:var(--ts-support-size);margin-top:1px}.purpose-strip{margin-top:0;margin-bottom:10px;line-height:1.35}.tap-button{width:100%;min-height:112px;border:1px solid color-mix(in srgb,var(--accent) 62%,var(--border));background:linear-gradient(180deg,color-mix(in srgb,var(--panel-2) 80%,var(--accent)),var(--panel));color:var(--text);border-radius:18px;font-size:clamp(1.9rem,5vw,3.1rem);font-weight:900;cursor:pointer;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 18%,transparent)}.tap-button:active{transform:scale(.992)}
.tool-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.hint{font-size:var(--ts-support-size);color:var(--muted);margin:7px 0 0}.field-row{display:grid;grid-template-columns:1fr auto;gap:9px;align-items:end}.field label{display:block;font-weight:820;margin-bottom:4px}.number-input,.select-input{width:100%;min-height:44px;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:11px;padding:7px 10px;font-size:1rem;font-weight:750}.number-input{font-size:1.08rem;font-weight:800}.range{width:100%;min-height:44px;margin:5px 0 0;accent-color:var(--accent)}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px;margin-top:7px}table{border-collapse:collapse;width:100%;min-width:0;font-variant-numeric:tabular-nums}th,td{text-align:right;padding:4px 8px;border-bottom:1px solid var(--border)}th:first-child,td:first-child{text-align:left}th{color:var(--muted);font-size:var(--ts-support-size);background:var(--panel-2)}tr:last-child td{border-bottom:0}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--ts-gap);margin-top:var(--ts-section-gap)}.info-panel,.bridge{padding:12px 14px}.info-panel h2,.bridge h2{font-size:1.18rem;margin:0 0 4px}.bridge p,.info-panel p{color:var(--muted);margin:0}.bridge-card{display:block;color:var(--text);text-decoration:none}.bridge-card p{color:var(--muted)}.link-list{display:grid;gap:7px}.link-card{display:block;min-height:44px;padding:9px 11px;border:1px solid var(--border);border-radius:11px;text-decoration:none;background:var(--bg);font-weight:800}.link-card.static-card{color:var(--muted);font-weight:700}.muted{color:var(--muted)}
footer{border-top:1px solid var(--border);padding:9px 16px;text-align:center;color:var(--muted);font-size:var(--ts-support-size)}footer strong{color:var(--gold)}footer br{display:none}footer strong::after{content:" · ";color:var(--muted);font-weight:400}.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}.error{color:var(--danger);font-weight:750}.small{font-size:var(--ts-support-size)}
.segmented{display:flex;flex-wrap:wrap;gap:7px;margin:5px 0 9px}.segmented button{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:999px;min-height:44px;padding:7px 12px;cursor:pointer;font-weight:800}.segmented button[aria-pressed="true"]{background:var(--accent);border-color:transparent;color:#061819}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}.field-help{display:block;color:var(--muted);font-size:var(--ts-support-size);margin-top:4px}.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(138px,1fr));gap:7px;margin-top:7px}.pitch-results{grid-template-columns:repeat(2,minmax(0,1fr))}.metric{border:1px solid var(--border);background:var(--bg);border-radius:12px;padding:9px}.metric-label{color:var(--muted);font-size:var(--ts-support-size);font-weight:800;text-transform:uppercase;letter-spacing:.02em}.metric-value{font-variant-numeric:tabular-nums;font-size:clamp(1.25rem,2.5vw,1.7rem);font-weight:900;margin-top:1px;overflow-wrap:anywhere}.metric-sub{color:var(--muted);font-size:var(--ts-support-size);margin-top:1px}.purpose-example{margin-top:6px;color:var(--muted);font-size:var(--ts-support-size)}.inline-note{display:inline-block;border:1px solid var(--border);background:var(--bg);padding:2px 6px;border-radius:7px;font-weight:850;color:var(--gold)}.mode-panel[hidden]{display:none}.result-note{font-size:clamp(2.25rem,4.2vw,3.6rem);font-weight:900;letter-spacing:-.03em;color:var(--gold);line-height:1.02;margin:4px 0 2px}.direction-arrow{font-size:1.28rem;color:var(--muted);font-weight:900;line-height:1.1}.instrument-hint{padding:7px 10px;border-left:3px solid var(--accent);background:var(--panel-2);border-radius:0 9px 9px 0;color:var(--muted);margin:7px 0}

@media(min-width:1000px) and (min-height:700px){
  body.hub-page main{padding-top:7px;padding-bottom:7px}
  body.hub-page .hero{padding-bottom:4px}
  body.hub-page .hero h1{font-size:2.15rem}
  body.hub-page .hero p{font-size:1rem;line-height:1.34}
  body.hub-page .status-strip{padding:7px 11px;margin:4px 0 8px}
  body.hub-page section>h2{margin:10px 0 7px}
  body.hub-page .grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
  body.hub-page .card{padding:11px 12px}
  body.hub-page .card p{margin-bottom:7px}
  body.hub-page footer{padding:5px 16px}
  body.tool-page main{padding-top:7px;padding-bottom:9px}
  body.tool-page .eyebrow{display:none}
  body.tool-page .hero{padding-bottom:5px}
  body.tool-page .hero h1{font-size:2.15rem}
  body.tool-page .hero p{font-size:1rem;line-height:1.34}
  body.tool-page .status-strip{padding:7px 11px;margin:4px 0 9px}
  body.tool-page .tool-panel,body.tool-page .result-panel{padding:10px 12px}
  body.tool-page .info-panel,body.tool-page .bridge{padding:9px 12px}
  body.tool-page footer{padding:7px 16px}
}
@media(max-width:800px){.tool-layout,.tool-layout.wide-result,.info-grid{grid-template-columns:1fr}.top-left{gap:6px}.top-back{padding:0 5px}.result-panel{position:static}.tap-button{min-height:118px}.topbar-inner{align-items:center}.brand span:last-child{display:none}main{padding-top:9px}.hero h1{font-size:clamp(1.9rem,8vw,2.45rem)}}
@media(max-width:520px){:root{--ts-body-size:16.5px;--ts-support-size:16px}.grid{grid-template-columns:1fr}main{padding-left:13px;padding-right:13px;padding-bottom:22px}.topbar-inner{padding-left:11px;padding-right:11px}.top-actions{gap:5px}.icon-btn{padding:7px 10px}.field-row{grid-template-columns:1fr}.card{padding:13px}.tool-panel,.result-panel,.info-panel,.bridge{padding:13px}.segmented{display:grid;grid-template-columns:1fr}.segmented button{border-radius:11px}.result-grid{grid-template-columns:1fr 1fr}.status-strip{margin-bottom:9px}.info-grid{gap:10px}footer{padding:10px 13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.result-panel,.tool-panel{min-width:0}
@media(max-width:520px){table{min-width:520px}}

@media(max-width:520px){
  .table-wrap{overflow:visible;border:0;background:transparent}
  .table-wrap table{min-width:0;display:block}
  .table-wrap thead{display:none}
  .table-wrap tbody{display:grid;gap:8px}
  .table-wrap tr{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;border:1px solid var(--border);border-radius:11px;padding:8px;background:var(--bg)}
  .table-wrap td{display:block;padding:0;border:0;text-align:left;font-size:var(--ts-support-size);overflow-wrap:anywhere}
  .table-wrap td:first-child{grid-column:1/-1;font-weight:850;color:var(--text);padding-bottom:4px;border-bottom:1px solid var(--border)}
  .table-wrap td:not(:first-child)::before{content:attr(data-label);display:block;color:var(--muted);font-size:var(--ts-support-size);font-weight:750;margin-bottom:1px}
}

.hub-page main{padding-bottom:5px}

.hub-page footer{padding:5px 16px}


.text-input{width:100%;min-height:118px;resize:vertical;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:11px;padding:9px 11px;font:inherit;line-height:1.42}
.text-input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.chord-output{min-height:118px;white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid var(--border);background:var(--bg);border-radius:11px;padding:9px 11px;font-size:1.06rem;font-weight:820;line-height:1.55}
.key-pair{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mode-explainer{color:var(--muted);font-size:var(--ts-support-size);margin:0 0 8px}
.result-capo{font-variant-numeric:tabular-nums;font-size:clamp(2.4rem,4.8vw,3.8rem);font-weight:900;line-height:1;color:var(--gold);margin:5px 0 3px}
.compact-note{color:var(--muted);font-size:var(--ts-support-size);margin:4px 0 0}
@media(max-width:520px){.key-pair{grid-template-columns:1fr}.text-input,.chord-output{min-height:132px}}