:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#172033;background:#f7f8fc;line-height:1.55;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,select{font:inherit}button{cursor:pointer}button:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #ffb84c;outline-offset:3px}.site-header{height:72px;max-width:1120px;margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:1.15rem;font-weight:800;color:#172033;text-decoration:none;letter-spacing:-.04em}.brand>span:first-child{color:#3156c9;margin-right:6px}.brand>span:last-child{color:#687189}.quiet-link,.text-button{color:#425170;text-decoration:none;background:none;border:0;padding:4px;font-weight:650}.hero{max-width:780px;text-align:center;margin:55px auto 32px;padding:0 24px}.eyebrow{color:#3156c9;letter-spacing:.12em;font-size:.72rem;font-weight:800;margin:0 0 9px}.hero h1{font-size:clamp(2.5rem,6vw,4.5rem);letter-spacing:-.065em;line-height:.98;margin:0}.lede{font-size:1.17rem;max-width:600px;margin:22px auto;color:#59647a}.badges{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}.badges span{font-size:.8rem;background:#fff;border:1px solid #e3e6ee;padding:6px 10px;border-radius:999px;color:#43506a}.detector,.panel,.how,.content,.faq,.privacy{max-width:760px;margin:0 auto 28px;border-radius:22px}.detector{background:#172033;color:#f9fbff;padding:26px;box-shadow:0 20px 50px #1c29551f}.controls{display:grid;grid-template-columns:1fr 1fr;gap:14px}.controls label,.octave-label{color:#bfc8da;font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.controls select,.octave-label select{display:block;width:100%;background:#253047;color:#fff;border:1px solid #3b4963;border-radius:8px;padding:8px;margin-top:4px}.voice-guide{font-size:.84rem;color:#c5ccda;margin:13px 0 0}.reading{text-align:center;padding:18px 0 3px}.note-name{font-size:clamp(5.5rem,16vw,8rem);font-weight:850;line-height:.9;letter-spacing:-.08em;color:#fff}.note-name small{font-size:.35em;vertical-align:top;letter-spacing:0;margin-left:6px;color:#8fa5e4}.frequency{color:#b8c4dc;display:block;font-size:1rem;margin-top:8px}.staff{display:block;width:100%;max-width:440px;margin:0 auto 8px;overflow:visible}.staff-lines line{stroke:#61708e;stroke-width:.75}.clef{font:40px serif;fill:#cfd9eb}.clef.bass{font-size:35px}.live-note{fill:#86a7ff;stroke:#86a7ff;stroke-width:1.3}.live-note text{fill:#f2f5ff;stroke:none;font-size:19px}.meter{max-width:480px;margin:0 auto}.meter-labels{display:flex;justify-content:space-between;align-items:center;color:#aebbd3;font-size:.76rem}.meter-labels strong{font-size:.82rem;color:#fff}.meter-track{height:8px;background:linear-gradient(90deg,#db6b6b,#d6a75a 40%,#55c298,#d6a75a 60%,#db6b6b);border-radius:8px;margin-top:6px;position:relative}.meter-track:after{content:"";height:15px;width:2px;background:#f8fbff;position:absolute;left:50%;top:-4px}.meter-track i{height:18px;width:18px;border:3px solid #172033;background:#fff;border-radius:50%;position:absolute;top:-5px;transform:translate(-50%);transition:left .1s}.clarity{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:9px;max-width:480px;margin:18px auto 0;color:#bfc8da;font-size:.77rem}.clarity>div{height:5px;background:#3a465d;border-radius:4px}.clarity i{display:block;height:100%;border-radius:4px;background:#8fa5e4}.clarity b{font-size:.78rem;color:#fff}.status{min-height:24px;text-align:center;color:#c9d4e8;font-size:.85rem;margin:20px 0 8px}.start-button,.consent button,.modal button{border:0;border-radius:10px;background:#fff;color:#172033;font-weight:800;padding:13px 20px}.start-button{display:block;margin:auto;min-width:190px}.panel{background:#fff;padding:28px;box-shadow:0 5px 25px #1c29550c}.section-title{display:flex;justify-content:space-between;align-items:center;gap:16px}.section-title h2,.how h2,.content h2,.faq h2,.privacy h2{font-size:1.7rem;letter-spacing:-.04em;margin:0;color:#172033}.history ol{list-style:none;padding:0;margin:16px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.history li{background:#f4f6fb;border-radius:10px;padding:11px;display:grid;gap:1px}.history strong{font-size:1.1rem}.history span,.history em,.empty,.piano>p{font-size:.82rem;color:#677288;font-style:normal}.history em{color:#a85e43}.history em.centered{color:#268667}.empty{margin:14px 0 0}.piano{overflow:hidden}.octave-label{color:#58657c;text-transform:none;letter-spacing:0}.octave-label select{color:#172033;background:#f4f6fb;border-color:#dce1ec}.keys{height:165px;display:flex;position:relative;margin-top:18px;padding-right:0}.key{height:100%;background:#fff;border:1px solid #cfd5e1;border-radius:0 0 7px 7px;flex:1;min-width:0;color:#5e6b81;position:relative;padding:0 0 10px;display:flex;justify-content:center;align-items:flex-end;font-size:.7rem}.key:active{background:#dfe7ff}.key.black{height:60%;background:#253047;max-width:0;z-index:2;border:0;padding:0}.key.black:before{content:"";position:absolute;width:68%;height:100%;right:-34%;top:0;background:#253047;border-radius:0 0 5px 5px;box-shadow:0 3px 3px #0002}.playing-note{color:#3156c9!important;font-weight:700}.how{padding:52px 28px;text-align:center}.how h2{font-size:2rem}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:32px}.steps article{padding:0 8px}.steps svg{width:46px;stroke:#3156c9;fill:none;stroke-width:1.5}.steps text{stroke:none;fill:#3156c9;font-size:18px;font-weight:800}.steps h3{font-size:1rem;margin:9px 0 3px}.steps p,.content p,.faq p,.privacy p{color:#59647a;font-size:.96rem;margin:0}.content,.faq,.privacy{padding:20px 28px}.content p{margin:0 0 16px}.faq details{border-bottom:1px solid #dce1ec;padding:17px 0}.faq summary{font-weight:720;color:#202a3e;cursor:pointer}.faq details p{margin-top:9px}.privacy{background:#e9edff;margin-bottom:55px}.privacy h2{font-size:1.4rem;margin-bottom:8px}.privacy .text-button{margin-top:10px}footer{text-align:center;color:#768197;font-size:.8rem;padding:26px}.consent{position:fixed;bottom:18px;right:18px;background:#172033;color:#fff;padding:17px;z-index:10;border-radius:15px;width:min(390px,calc(100vw - 36px));box-shadow:0 15px 40px #17203344}.consent p{font-size:.84rem;line-height:1.45;margin:0 0 12px;color:#d7dfef}.consent button{padding:9px 12px;margin-right:6px;font-size:.82rem}.consent .secondary,.modal .secondary{background:transparent;color:inherit;border:1px solid currentColor}.modal{position:fixed;inset:0;background:#15203b77;display:grid;place-items:center;padding:20px;z-index:11}.modal>div{position:relative;background:#fff;padding:30px;border-radius:16px;max-width:440px}.modal h2{margin:0}.modal p{color:#59647a}.modal button{background:#3156c9;color:#fff;margin:7px 8px 0 0}.modal .secondary{color:#3156c9}.close{position:absolute;right:12px;top:10px!important;padding:4px!important;background:transparent!important;color:#172033!important;font-size:1.5rem!important}@media(max-width:650px){.site-header{padding:0 18px}.hero{margin-top:30px}.detector,.panel,.content,.faq,.privacy{border-radius:0;margin-bottom:14px}.detector{padding:20px}.controls{gap:9px}.history ol{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr;gap:20px}.how{padding:38px 24px}.keys{height:135px}.content,.faq,.privacy{padding:28px 22px}.consent{bottom:0;right:0;width:100%;border-radius:14px 14px 0 0}.note-name{font-size:6rem}}.content-note{max-width:760px;margin:-24px auto 28px;padding:0 28px}.content-note p{color:#59647a;font-size:.96rem;margin:0 0 16px}@media(max-width:650px){.content-note{padding:0 22px;margin:0 auto 14px}}.content-note table{width:100%;border-collapse:collapse;table-layout:fixed;margin:28px 0 16px;color:#172033}.content-note caption{caption-side:top;font-size:1.05rem;margin-bottom:10px}.content-note th,.content-note td{text-align:left;vertical-align:top;padding:0 14px 10px;line-height:1.45;overflow-wrap:anywhere}.content-note th{font-weight:750;padding-bottom:12px}.content-note th:first-child,.content-note td:first-child{padding-left:0}.content-note th:last-child,.content-note td:last-child{padding-right:0}.content-note table:has(th:nth-child(3)) th:first-child,.content-note table:has(th:nth-child(3)) td:first-child{width:42%}.content-note table:has(th:nth-child(3)) th:nth-child(2),.content-note table:has(th:nth-child(3)) td:nth-child(2){width:26%}.content-note table:has(th:nth-child(2)):not(:has(th:nth-child(3))) th:first-child,.content-note table:has(th:nth-child(2)):not(:has(th:nth-child(3))) td:first-child{width:28%}.content-note table:has(th:nth-child(2)):not(:has(th:nth-child(3))) th:last-child,.content-note table:has(th:nth-child(2)):not(:has(th:nth-child(3))) td:last-child{width:72%}@media(max-width:650px){.content-note table{font-size:.9rem;margin-top:22px}.content-note th,.content-note td{padding-left:8px;padding-right:8px}}.static-page{min-height:calc(100vh - 150px);padding:72px 24px 24px}.static-page>.content,.static-page>.privacy{max-width:760px;margin:0 auto 28px}.static-page h1{font-size:clamp(2.2rem,5vw,3.5rem);line-height:1.05;letter-spacing:-.055em;margin:0 0 22px}.static-page .privacy{padding:28px}.static-page .privacy h1{margin-bottom:16px}:root{color:#1d2433;background:#f7f8fc}.site-header{height:76px}.site-header nav{display:flex;gap:24px;font-size:.82rem}.brand>img{display:inline-block;vertical-align:middle;margin-right:6px;border-radius:9px}.hero{max-width:1000px;margin:26px auto 30px}.hero h1{font-size:clamp(2rem,4.2vw,3.4rem);line-height:1.12;letter-spacing:-.055em}.lede{font-size:1rem;margin:12px auto 0}.workspace{max-width:1072px;margin:0 auto 20px;display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:20px;align-items:start}.detector,.panel{background:#fff;border:1px solid #e7eaf0;border-radius:24px;box-shadow:0 4px 18px #17203305;padding:28px}.workspace>.detector,.workspace>.history{width:100%;max-width:none;margin:0;min-width:0}.detector{color:#172033}.detector-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.detector-heading h2{font-size:1rem;margin:0;letter-spacing:-.02em}.detector-state{display:flex;align-items:center;gap:7px;border-radius:20px;background:#f4f6f9;color:#58657c;padding:5px 10px;font-size:.73rem}.detector-state:before{content:"";width:6px;height:6px;border-radius:50%;background:#8994a5}.detector-state.active:before{background:#23835e}.detector-action{display:flex;align-items:center;gap:18px;margin-top:20px}.start-button{margin:0;background:#0866df;color:#fff;min-width:190px;border-radius:12px;font-weight:700}.start-button:hover{background:#0758c1}.start-button.active{background:#c62828}.start-button.active:hover{background:#a91f1f}.detector-action-copy{display:grid;gap:5px;min-width:0}.detector-action p{font-size:.75rem;color:#59647a;margin:0;max-width:190px}.status{text-align:left;color:#0866df;min-height:0;font-size:.8rem;font-weight:650}.pitch-display{display:grid;grid-template-columns:minmax(130px,1fr) minmax(0,1.5fr);align-items:center;gap:20px;margin:20px 0 26px;min-height:160px}.reading{padding:0;text-align:center}.note-name{color:#172033;font-size:6.5rem;letter-spacing:-.06em;font-variant-numeric:tabular-nums}.note-name small{color:#0866df}.frequency{color:#59647a;font-size:.85rem;margin-top:12px;font-variant-numeric:tabular-nums}.staff{margin:0;width:100%;background:#f7f8fc;border-radius:14px;padding:8px}.staff-lines line{stroke:#b0b9c7}.clef{fill:#4e5d73}.live-note{fill:#0866df;stroke:#0866df}.live-note text{fill:#172033}.meter,.clarity{max-width:none}.meter-labels{color:#59647a}.meter-labels strong,.clarity b{color:#172033;font-variant-numeric:tabular-nums}.meter-track{background:linear-gradient(90deg,#f1d8d5,#f0e3c9 35%,#bde1d1,#f0e3c9 65%,#f1d8d5)}.meter-track:after{background:#8994a5;width:1px}.meter-track i{border:2px solid #0866df;z-index:1}.clarity{color:#59647a;margin-top:20px}.clarity>div{background:#edf0f5}.clarity i{background:#0866df}.detector-settings{margin-top:24px;border-top:1px solid #e7eaf0;padding-top:16px}.detector-settings summary{font-size:.82rem;font-weight:650;cursor:pointer}.detector-settings summary span{float:right;font-size:.75rem;color:#59647a;font-weight:400}.detector-settings .controls{margin-top:16px}.controls label{color:#59647a;text-transform:none;letter-spacing:0}.controls select{background:#f7f8fc;border-color:#dce1ec;color:#172033;padding:10px}.voice-guide{color:#59647a;font-size:.78rem}.history .section-title h2{font-size:1.35rem}.history ol{grid-template-columns:1fr;max-height:370px;overflow:auto}.history li{grid-template-columns:48px 1fr auto;align-items:center;gap:8px;padding:12px}.history strong{font-size:1rem}.history span,.history em{font-size:.75rem}.history .empty{min-height:160px;display:flex;align-items:center;text-align:center;justify-content:center;border:1px dashed #dce1ec;border-radius:14px;padding:24px;line-height:1.7;margin-top:20px}.piano{max-width:1072px;margin-bottom:28px}.piano .section-title h2{font-size:1.5rem}.keys{height:140px}.how{max-width:1072px;padding:40px 20px}.steps{gap:20px}.steps article{background:#fff;border:1px solid #e7eaf0;border-radius:20px;padding:24px;text-align:left}.content,.faq{max-width:860px}.content h2{margin-bottom:16px}.content-note{max-width:860px}.privacy{max-width:804px;background:#ecf3ff;border:1px solid #dce9ff}@media(max-width:1120px){.workspace,.piano{margin-left:24px;margin-right:24px}}@media(max-width:760px){.site-header{height:64px;padding:0 18px}.site-header nav{gap:16px}.site-header nav a:first-child{display:none}.brand{font-size:1rem}.hero{margin:18px auto 22px;padding:0 20px}.hero .eyebrow{font-size:.65rem}.lede{font-size:.88rem;max-width:320px;margin-top:10px}.workspace{grid-template-columns:minmax(0,1fr);gap:16px;margin:0 16px 16px}.detector,.panel{padding:20px;border-radius:20px}.detector-action{gap:12px;margin-top:16px}.start-button{min-width:0;flex-shrink:0;padding:12px 16px;font-size:.9rem}.detector-action p{font-size:.68rem}.pitch-display{grid-template-columns:minmax(100px,1fr) minmax(0,1.3fr);gap:12px;min-height:128px;margin:16px 0 20px}.note-name{font-size:5rem}.frequency{font-size:.75rem}.staff{padding:0}.detector-settings{margin-top:20px}.detector-settings summary span{font-size:.7rem}.history .empty{min-height:90px;padding:16px}.history ol{max-height:220px}.piano{margin:0 16px 20px}.piano .section-title{gap:8px}.piano .section-title h2{font-size:1.25rem}.keys{height:125px}.steps{grid-template-columns:1fr;gap:12px}.how{padding:28px 16px}.how h2{font-size:1.7rem}.content,.faq,.privacy{padding:24px 20px}.privacy{margin:16px;border-radius:20px}}@media(max-width:360px){.site-header nav{gap:8px}.detector-action{gap:8px}.start-button{padding:12px}.detector-settings summary span{font-size:.65rem}}.pitch-display{display:block;min-height:0;margin:14px 0 22px}.pitch-wheel{overflow:hidden;padding:12px 0 18px}.pitch-wheel svg{display:block;width:100%;height:auto;overflow:hidden}.wheel-dial{transform-origin:300px 640px;transition:transform .12s linear}.wheel-tick{stroke:#4e789b;stroke-width:1.5}.wheel-tick.major{stroke-width:3.5}.wheel-note{fill:#4e789b;font-size:46px;font-weight:600;letter-spacing:-.03em}.wheel-pointer{fill:#0866df}.wheel-reading{display:grid;gap:8px;text-align:center;white-space:nowrap;margin-top:-8px}.wheel-reading strong{color:#0866df;font-size:2.2rem;letter-spacing:-.04em;line-height:1.2}.wheel-reading sub{font-size:.6em;vertical-align:baseline;position:relative;top:.15em}.wheel-reading span{color:#4e789b;font-size:1.15rem;font-variant-numeric:tabular-nums}@media(prefers-reduced-motion:reduce){.wheel-dial{transition:none}}@media(max-width:760px){.pitch-display{margin:12px 0 20px}.pitch-wheel{padding:16px 0}.wheel-reading{margin-top:4px}.wheel-reading strong{font-size:1.65rem}}.piano{background:#f4f7ff;border-color:#dce5f5}.piano .keys{height:238px;margin-top:20px;padding:0;overflow:hidden;border:1px solid #bccce1;border-radius:26px;background:#fff}.white-keys{display:flex;width:100%;height:100%}.key.white{height:100%;flex:1;border:0;border-right:1px solid #bccce1;border-radius:0;background:#fff;color:#5d718e;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:3px;padding:18px 4px 10px;box-shadow:none}.key.white:last-child{border-right:0}.key.black{position:absolute;z-index:2;top:0;width:9.2%;height:63%;max-width:none;transform:translate(-50%);border:0;border-radius:0 0 10px 10px;background:#1e1d2d;color:#eef3ff;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:2px;padding:9px 2px 7px;box-shadow:none}.key.black:before{display:none}.key .piano-key-hint{font-size:.74rem;font-weight:500;line-height:1;color:#aebfd5}.key.black .piano-key-hint{color:#8c9bb2}.key strong{font-size:1.05rem;line-height:1.1;font-weight:750}.key.black strong{font-size:.78rem;color:#e7ecf8}.key.white:hover{background:#f2f6ff}.key.black:hover{background:#29273c}.key.white:active{background:#dceaff}.key.black:active{background:#3a577a}@media(max-width:760px){.piano .keys{height:170px;border-radius:18px}.key.white{padding-bottom:8px}.key .piano-key-hint{font-size:.62rem}.key strong{font-size:.82rem}.key.black strong{font-size:.63rem}}