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transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.collapse{visibility:collapse}.visible{visibility:visible}.absolute{position:absolute}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.isolate{isolation:isolate}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.contents{display:contents}.flex{display:flex}.hidden{display:none}.inline{display:inline}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.italic{font-style:italic}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--ink:#16211d;--paper:#f3ede2;--card:#e7d6bf;--accent:#df5a42;--wood:#634a39}*{box-sizing:border-box}html,body{background:#272722;min-height:100%;margin:0}body{color:var(--ink);font-family:Arial,Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif}button{font:inherit;-webkit-tap-highlight-color:transparent}.piano-app{background:radial-gradient(circle at 80% 10%,#fff8e9 0,#efe4d2 38%,#dbc8b0 100%);flex-direction:column;min-height:100dvh;display:flex;overflow:hidden}.topbar{color:#fff9ed;z-index:3;background:linear-gradient(90deg,#503d32,#6e5240 45%,#4b382d);align-items:center;gap:9px;height:38px;padding:0 9px;display:flex;box-shadow:0 2px 8px #2d1a1180}.brand{letter-spacing:.05em;white-space:nowrap;font-size:13px}.brand span{display:none}.key-picker{letter-spacing:.1em;align-items:center;gap:4px;margin:auto;font-size:9px;display:flex}.key-picker button,.top-actions button{color:inherit;cursor:pointer;background:0 0;border:0}.key-picker button{font-size:20px;line-height:.6}.top-actions{align-items:center;gap:4px;display:flex}.top-actions button{min-width:24px;height:21px;color:inherit;border-radius:5px;justify-content:center;align-items:center;padding:0 4px;font-size:8px;display:flex}.record-placeholder{display:none!important}.sound-button,.stop-button{border:1px solid #ffffff4d!important}.stop-button{color:#ffe3d4!important}.volume-button{font-size:14px!important}.help-button{width:21px;height:21px;border:1px solid #ffffff80!important;border-radius:50%!important}.hint{display:none}.info-sheet{z-index:9;color:#fffdf8;background:#263b34f7;border:1px solid #fff4df;border-radius:15px;width:min(430px,100vw - 32px);padding:22px;font-size:13px;line-height:1.6;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 12px 38px #17231977}.info-sheet strong{margin-bottom:8px;font-size:16px;display:block}.info-sheet p{margin:6px 0}.info-sheet small{color:#dce9df;margin:12px 0;font-size:11px;display:block}.info-sheet button{color:#453127;cursor:pointer;background:#f9e5cd;border:1px solid #ffe6cb;border-radius:8px;width:100%;padding:9px;font-weight:700;display:block}.play-area{flex:1;gap:4px;min-height:0;padding:3px;display:flex}.chord-side{background:#f7efe3bb;border-radius:9px;flex-direction:column;width:clamp(118px,20vw,190px);padding:6px;display:flex;box-shadow:inset 0 0 0 1px #fff9ee,0 4px 10px #7155371c}.side-title,.melody-caption{letter-spacing:.12em;color:#6f5542;justify-content:space-between;font-size:8px;display:flex}.side-title span{letter-spacing:.04em;font-weight:400}.chord-grid{grid-template-columns:repeat(2,1fr);gap:4px;margin:auto 0 4px;display:grid}.chord-pad{color:#3f3027;cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none;background:linear-gradient(145deg,#fffdf6,#e9dac5);border:1px solid #d5bea0;border-radius:8px;min-height:clamp(38px,12vh,68px);font-size:clamp(16px,2.4vw,26px);font-weight:600;box-shadow:0 3px #c5ab8b,0 4px 7px #72573b26}.chord-pad:active{background:#e7cba9;transform:translateY(3px);box-shadow:0 0 #c5ab8b,inset 0 3px 8px #805c3b30}.chord-side p{display:none}.melody-side{background:#f9f5ec91;border-radius:8px;flex-direction:column;flex:1;min-width:0;padding:3px 3px 2px;display:flex;box-shadow:inset 0 0 0 1px #fffdf6}.melody-caption{margin:0 2px 3px}.keyboard{background:linear-gradient(130deg,#2b2924,#544639 42%,#2a2925);border-radius:5px;flex:1;min-height:0;padding:3px;overflow:hidden;box-shadow:inset 0 1px 3px #000a,0 4px 8px #69523b33}.white-keys{border-radius:3px;height:100%;display:flex;position:relative;overflow:visible}.white-key{color:#8a7764;cursor:pointer;touch-action:none;-webkit-user-select:none;user-select:none;background:linear-gradient(90deg,#f4ecde 0%,#fffdf6 42%,#e7dccc 100%);border:1px solid #b9ab98;border-radius:0 0 5px 5px;flex:1;min-width:0;position:relative;box-shadow:inset 1px 0 #fff,inset 0 -6px 12px #bca88922}.white-key:active,.white-key.active{background:linear-gradient(#f0c6a4,#dc9473);box-shadow:inset 0 4px 11px #7e4b3c66}.white-key>span{font-size:9px;position:absolute;bottom:7px;left:50%;transform:translate(-50%)}.black-key{z-index:2;cursor:pointer;touch-action:none;background:linear-gradient(90deg,#11110f,#3b332d 45%,#100f0e);border:1px solid #17120f;border-radius:0 0 6px 6px;width:56%;height:59%;display:block;position:absolute;top:-1px;right:-28%;box-shadow:3px 5px 5px #21160b73,inset 2px 0 1px #66584a55}.black-key:active{background:linear-gradient(#805b4b,#352520);transform:translateY(3px)}.range-controls{color:#6b5441;letter-spacing:.06em;justify-content:center;align-items:center;gap:8px;padding:2px 0 0;font-size:8px;display:flex}.range-controls button{color:#5e4534;cursor:pointer;background:#fff9ef;border:1px solid #cdbda9;border-radius:5px;width:22px;height:18px}.range-controls button:active{background:#e4c49d}footer{display:none}@media (max-width:640px) and (orientation:portrait){.topbar{gap:8px;padding:0 10px}.brand{font-size:14px}.top-actions button:first-child{font-size:0}.play-area{gap:8px;padding:8px}.chord-side{width:35%;padding:9px}.chord-grid{gap:6px}.chord-pad{min-height:53px;font-size:18px}.melody-side{padding:9px}.keyboard{min-height:330px;padding:5px}.white-key>span{display:none}.black-key{height:54%}.side-title,.melody-caption{font-size:8px}footer{display:none}}@media (max-height:480px){.topbar{height:32px}.brand{font-size:11px}.hint{top:38px}.play-area{gap:3px;padding:2px}.chord-side{width:clamp(108px,19vw,160px);padding:4px}.chord-grid{gap:3px;margin:auto 0 2px}.chord-pad{border-radius:6px;min-height:34px}.keyboard{min-height:0;padding:2px}.melody-side{padding:2px}.melody-caption{margin-bottom:1px}.range-controls{padding-top:1px}.range-controls button{height:16px}.chord-side p{display:none}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}