/*! Key Change Semitone Chart 1.0.0 | onlinepitchchanger.com | brand: #0067FF primary, #22B8F0 accent, #0F172A navy. Sizes in px (Astra shrinks rem); text >= 15px, labels >= 13px, contrast >= 4.5:1. */
.opc-ks{--ks-blue:#0067ff;--ks-blue2:#0052cc;--ks-cyan:#22b8f0;--ks-navy:#0f172a;--ks-text:#334155;--ks-muted:#475569;--ks-light:#f0f7ff;--ks-line:#d6e4f5;max-width:1080px;margin:0 auto 1.75em;color:var(--ks-text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;box-sizing:border-box;text-align:left}.opc-ks *,.opc-ks *::before,.opc-ks *::after{box-sizing:border-box}.opc-ks [hidden]{display:none!important}.opc-ks p,.opc-ks dl,.opc-ks dd,.opc-ks h2{margin:0}.opc-ks button,.opc-ks select{font:inherit;letter-spacing:normal;text-transform:none;box-shadow:none;margin:0}.opc-ks button{cursor:pointer;line-height:1.2}.opc-ks :focus-visible{outline:3px solid var(--ks-blue);outline-offset:2px}.opc-ks-head{margin:0 0 12px}.opc-ks-title{margin:0;font-size:24px;line-height:1.25;font-weight:800;color:var(--ks-navy);letter-spacing:-.01em}.opc-ks-lead{margin:4px 0 0!important;color:var(--ks-muted);font-size:16px}.opc-ks-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;align-items:start}.opc-ks-card{background:var(--ks-navy);color:#fff;border-radius:16px;padding:16px}.opc-ks-pick{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 14px}.opc-ks-field{display:block;margin:0}.opc-ks-field span{display:block;font-size:14px;font-weight:700;line-height:1.3;color:#cbd5e1;margin:0 0 4px}.opc-ks-field select{display:block;width:100%;min-height:46px;padding:0 10px;border:2px solid #334155;border-radius:10px;background:#fff;color:var(--ks-navy);font-size:16px;font-weight:700}.opc-ks-ans{padding:12px 14px;border-radius:12px;background:#1e293b;border-left:5px solid var(--ks-cyan)}.opc-ks-pair{font-size:16px;font-weight:700;color:#a5e4fa}.opc-ks-big{margin:2px 0 4px!important;font-size:30px;line-height:1.15;font-weight:800;color:#fff;letter-spacing:-.01em}.opc-ks-alt{font-size:16px;line-height:1.45;color:#e2e8f0}.opc-ks-facts{display:grid;gap:8px;margin:12px 0!important}.opc-ks-facts div{display:grid;grid-template-columns:96px minmax(0,1fr);gap:8px;align-items:baseline}.opc-ks-facts dt{font-size:14px;font-weight:700;color:#cbd5e1}.opc-ks-facts dd{font-size:16px;line-height:1.4;color:#fff;margin:0}.opc-ks-applyrow{display:flex;flex-direction:column;gap:6px}.opc-ks a.opc-ks-apply{display:flex;align-items:center;justify-content:center;min-height:48px;padding:8px 16px;border-radius:12px;background:var(--ks-blue);color:#fff;font-weight:800;font-size:17px;text-align:center;text-decoration:none;line-height:1.25}.opc-ks a.opc-ks-apply:hover{background:var(--ks-blue2);color:#fff}.opc-ks a.opc-ks-apply2{display:inline-flex;align-items:center;justify-content:center;min-height:44px;color:#a5e4fa;font-weight:700;font-size:16px;text-decoration:underline;text-underline-offset:3px}.opc-ks a.opc-ks-apply2:hover{color:#fff}.opc-ks-card :focus-visible{outline-color:var(--ks-cyan)}.opc-ks-same{padding:10px 12px;border-radius:10px;background:#fef3c7;color:#78350f;font-size:16px;font-weight:700}.opc-ks-chart{min-width:0}.opc-ks-ctrl{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0 0 10px}.opc-ks-cg{display:flex;align-items:center;gap:8px}.opc-ks-label{font-size:15px;font-weight:700;color:var(--ks-navy)}.opc-ks-seg{display:inline-flex;flex-wrap:wrap;border-radius:12px;padding:3px;gap:3px;background:#e8f0fb}.opc-ks-seg button{min-height:44px;padding:0 13px;border:0;border-radius:9px;background:transparent;color:var(--ks-navy);font-weight:700;font-size:15px;white-space:nowrap}.opc-ks .opc-ks-seg button:hover,.opc-ks .opc-ks-seg button:focus{background:#d7e6fb;color:var(--ks-navy)}.opc-ks .opc-ks-seg button[aria-pressed=true]{background:var(--ks-blue);color:#fff}.opc-ks-swipe{display:none;margin:0 0 6px!important;font-size:15px;color:var(--ks-muted)}.opc-ks-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--ks-line);border-radius:14px;background:#fff}.opc-ks-table{width:100%;min-width:660px;border-collapse:separate;border-spacing:3px;margin:0;border:0;table-layout:fixed;font-size:15px}.opc-ks-vh{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.opc-ks-captext{margin:0 0 6px!important;font-size:15px;font-weight:700;color:var(--ks-navy);line-height:1.35}.opc-ks-table th,.opc-ks-table td{padding:0;border:0;text-align:center;vertical-align:middle;background:none}.opc-ks-table th{height:40px;border-radius:8px;background:var(--ks-light);color:var(--ks-navy);font-weight:800;font-size:15px;white-space:nowrap}.opc-ks-table th.is-on{background:var(--ks-navy);color:#fff}.opc-ks-table tbody th{position:sticky;left:0;z-index:1;box-shadow:-3px 0 0 #fff}.opc-ks-table .opc-ks-corner{width:62px;font-size:13px;line-height:1.15;font-weight:700;white-space:normal;background:#fff;color:var(--ks-muted)}.opc-ks-corner span{display:block}.opc-ks-c{display:block;width:100%;min-width:44px;height:44px;padding:0;border:0;border-radius:8px;color:var(--ks-navy);font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;background:#f1f5f9}.opc-ks-c[data-dir=z]{color:var(--ks-muted);background:#f1f5f9}.opc-ks-c[data-dir=u][data-lv="1"]{background:#eef5ff}.opc-ks-c[data-dir=u][data-lv="2"]{background:#dcebff}.opc-ks-c[data-dir=u][data-lv="3"]{background:#c4ddff}.opc-ks-c[data-dir=u][data-lv="4"]{background:#a9ccff}.opc-ks-c[data-dir=d][data-lv="1"]{background:#edf9fd}.opc-ks-c[data-dir=d][data-lv="2"]{background:#d6f1fa}.opc-ks-c[data-dir=d][data-lv="3"]{background:#b8e6f6}.opc-ks-c[data-dir=d][data-lv="4"]{background:#97d9f1}.opc-ks-c[data-dir=t]{background:#fde7c8}.opc-ks .opc-ks-c,.opc-ks .opc-ks-c:hover,.opc-ks .opc-ks-c:focus{color:var(--ks-navy);box-shadow:none}.opc-ks .opc-ks-c[data-dir=z],.opc-ks .opc-ks-c[data-dir=z]:hover,.opc-ks .opc-ks-c[data-dir=z]:focus{color:var(--ks-muted)}.opc-ks .opc-ks-c:hover{box-shadow:inset 0 0 0 2px var(--ks-blue)}.opc-ks .opc-ks-c[aria-pressed=true],.opc-ks .opc-ks-c[aria-pressed=true]:hover,.opc-ks .opc-ks-c[aria-pressed=true]:focus{background:var(--ks-blue)!important;color:#fff;box-shadow:inset 0 0 0 2px var(--ks-navy)}.opc-ks-legend{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;margin:8px 0 0!important;font-size:15px;line-height:1.45;color:var(--ks-muted)}.opc-ks-legend+.opc-ks-legend{margin-top:2px!important}.opc-ks-li{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.opc-ks-sw{display:inline-block;width:16px;height:16px;border-radius:4px;border:1px solid #94a3b8}.opc-ks-sw[data-dir=u]{background:#c4ddff}.opc-ks-sw[data-dir=d]{background:#b8e6f6}.opc-ks-sw[data-dir=t]{background:#fde7c8}@media (max-width:620px){.opc-ks-swipe{display:block}.opc-ks-big{font-size:27px}.opc-ks-card{padding:14px}}@media (max-width:359px){.opc-ks-pick{grid-template-columns:1fr}}@media (min-width:960px){.opc-ks-grid{grid-template-columns:minmax(0,1fr) 340px}.opc-ks-card{order:2;position:sticky;top:16px}.opc-ks-chart{order:1}.opc-ks-c{height:46px}}@media (prefers-reduced-motion:reduce){.opc-ks *{transition:none!important}}